Ответы julianromera и instine объединились:
[
{"code":"ab","name":"Abkhaz","nativeName":"аҧсуа"},
{"code":"aa","name":"Afar","nativeName":"Afaraf"},
{"code":"af","name":"Afrikaans","nativeName":"Afrikaans"},
{"code":"ak","name":"Akan","nativeName":"Akan"},
{"code":"sq","name":"Albanian","nativeName":"Shqip"},
{"code":"am","name":"Amharic","nativeName":"አማርኛ"},
{"code":"ar","name":"Arabic","nativeName":"العربية"},
{"code":"an","name":"Aragonese","nativeName":"Aragonés"},
{"code":"hy","name":"Armenian","nativeName":"Հայերեն"},
{"code":"as","name":"Assamese","nativeName":"অসমীয়া"},
{"code":"av","name":"Avaric","nativeName":"авар мацӀ, магӀарул мацӀ"},
{"code":"ae","name":"Avestan","nativeName":"avesta"},
{"code":"ay","name":"Aymara","nativeName":"aymar aru"},
{"code":"az","name":"Azerbaijani","nativeName":"azərbaycan dili"},
{"code":"bm","name":"Bambara","nativeName":"bamanankan"},
{"code":"ba","name":"Bashkir","nativeName":"башҡорт теле"},
{"code":"eu","name":"Basque","nativeName":"euskara, euskera"},
{"code":"be","name":"Belarusian","nativeName":"Беларуская"},
{"code":"bn","name":"Bengali","nativeName":"বাংলা"},
{"code":"bh","name":"Bihari","nativeName":"भोजपुरी"},
{"code":"bi","name":"Bislama","nativeName":"Bislama"},
{"code":"bs","name":"Bosnian","nativeName":"bosanski jezik"},
{"code":"br","name":"Breton","nativeName":"brezhoneg"},
{"code":"bg","name":"Bulgarian","nativeName":"български език"},
{"code":"my","name":"Burmese","nativeName":"ဗမာစာ"},
{"code":"ca","name":"Catalan; Valencian","nativeName":"Català"},
{"code":"ch","name":"Chamorro","nativeName":"Chamoru"},
{"code":"ce","name":"Chechen","nativeName":"нохчийн мотт"},
{"code":"ny","name":"Chichewa; Chewa; Nyanja","nativeName":"chiCheŵa, chinyanja"},
{"code":"zh","name":"Chinese","nativeName":"中文 (Zhōngwén), 汉语, 漢語"},
{"code":"cv","name":"Chuvash","nativeName":"чӑваш чӗлхи"},
{"code":"kw","name":"Cornish","nativeName":"Kernewek"},
{"code":"co","name":"Corsican","nativeName":"corsu, lingua corsa"},
{"code":"cr","name":"Cree","nativeName":"ᓀᐦᐃᔭᐍᐏᐣ"},
{"code":"hr","name":"Croatian","nativeName":"hrvatski"},
{"code":"cs","name":"Czech","nativeName":"česky, čeština"},
{"code":"da","name":"Danish","nativeName":"dansk"},
{"code":"dv","name":"Divehi; Dhivehi; Maldivian;","nativeName":"ދިވެހި"},
{"code":"nl","name":"Dutch","nativeName":"Nederlands, Vlaams"},
{"code":"en","name":"English","nativeName":"English"},
{"code":"eo","name":"Esperanto","nativeName":"Esperanto"},
{"code":"et","name":"Estonian","nativeName":"eesti, eesti keel"},
{"code":"ee","name":"Ewe","nativeName":"Eʋegbe"},
{"code":"fo","name":"Faroese","nativeName":"føroyskt"},
{"code":"fj","name":"Fijian","nativeName":"vosa Vakaviti"},
{"code":"fi","name":"Finnish","nativeName":"suomi, suomen kieli"},
{"code":"fr","name":"French","nativeName":"français, langue française"},
{"code":"ff","name":"Fula; Fulah; Pulaar; Pular","nativeName":"Fulfulde, Pulaar, Pular"},
{"code":"gl","name":"Galician","nativeName":"Galego"},
{"code":"ka","name":"Georgian","nativeName":"ქართული"},
{"code":"de","name":"German","nativeName":"Deutsch"},
{"code":"el","name":"Greek, Modern","nativeName":"Ελληνικά"},
{"code":"gn","name":"Guaraní","nativeName":"Avañeẽ"},
{"code":"gu","name":"Gujarati","nativeName":"ગુજરાતી"},
{"code":"ht","name":"Haitian; Haitian Creole","nativeName":"Kreyòl ayisyen"},
{"code":"ha","name":"Hausa","nativeName":"Hausa, هَوُسَ"},
{"code":"he","name":"Hebrew (modern)","nativeName":"עברית"},
{"code":"hz","name":"Herero","nativeName":"Otjiherero"},
{"code":"hi","name":"Hindi","nativeName":"हिन्दी, हिंदी"},
{"code":"ho","name":"Hiri Motu","nativeName":"Hiri Motu"},
{"code":"hu","name":"Hungarian","nativeName":"Magyar"},
{"code":"ia","name":"Interlingua","nativeName":"Interlingua"},
{"code":"id","name":"Indonesian","nativeName":"Bahasa Indonesia"},
{"code":"ie","name":"Interlingue","nativeName":"Originally called Occidental; then Interlingue after WWII"},
{"code":"ga","name":"Irish","nativeName":"Gaeilge"},
{"code":"ig","name":"Igbo","nativeName":"Asụsụ Igbo"},
{"code":"ik","name":"Inupiaq","nativeName":"Iñupiaq, Iñupiatun"},
{"code":"io","name":"Ido","nativeName":"Ido"},
{"code":"is","name":"Icelandic","nativeName":"Íslenska"},
{"code":"it","name":"Italian","nativeName":"Italiano"},
{"code":"iu","name":"Inuktitut","nativeName":"ᐃᓄᒃᑎᑐᑦ"},
{"code":"ja","name":"Japanese","nativeName":"日本語 (にほんご／にっぽんご)"},
{"code":"jv","name":"Javanese","nativeName":"basa Jawa"},
{"code":"kl","name":"Kalaallisut, Greenlandic","nativeName":"kalaallisut, kalaallit oqaasii"},
{"code":"kn","name":"Kannada","nativeName":"ಕನ್ನಡ"},
{"code":"kr","name":"Kanuri","nativeName":"Kanuri"},
{"code":"ks","name":"Kashmiri","nativeName":"कश्मीरी, كشميري"},
{"code":"kk","name":"Kazakh","nativeName":"Қазақ тілі"},
{"code":"km","name":"Khmer","nativeName":"ភាសាខ្មែរ"},
{"code":"ki","name":"Kikuyu, Gikuyu","nativeName":"Gĩkũyũ"},
{"code":"rw","name":"Kinyarwanda","nativeName":"Ikinyarwanda"},
{"code":"ky","name":"Kirghiz, Kyrgyz","nativeName":"кыргыз тили"},
{"code":"kv","name":"Komi","nativeName":"коми кыв"},
{"code":"kg","name":"Kongo","nativeName":"KiKongo"},
{"code":"ko","name":"Korean","nativeName":"한국어 (韓國語), 조선말 (朝鮮語)"},
{"code":"ku","name":"Kurdish","nativeName":"Kurdî, كوردی"},
{"code":"kj","name":"Kwanyama, Kuanyama","nativeName":"Kuanyama"},
{"code":"la","name":"Latin","nativeName":"latine, lingua latina"},
{"code":"lb","name":"Luxembourgish, Letzeburgesch","nativeName":"Lëtzebuergesch"},
{"code":"lg","name":"Luganda","nativeName":"Luganda"},
{"code":"li","name":"Limburgish, Limburgan, Limburger","nativeName":"Limburgs"},
{"code":"ln","name":"Lingala","nativeName":"Lingála"},
{"code":"lo","name":"Lao","nativeName":"ພາສາລາວ"},
{"code":"lt","name":"Lithuanian","nativeName":"lietuvių kalba"},
{"code":"lu","name":"Luba-Katanga","nativeName":""},
{"code":"lv","name":"Latvian","nativeName":"latviešu valoda"},
{"code":"gv","name":"Manx","nativeName":"Gaelg, Gailck"},
{"code":"mk","name":"Macedonian","nativeName":"македонски јазик"},
{"code":"mg","name":"Malagasy","nativeName":"Malagasy fiteny"},
{"code":"ms","name":"Malay","nativeName":"bahasa Melayu, بهاس ملايو"},
{"code":"ml","name":"Malayalam","nativeName":"മലയാളം"},
{"code":"mt","name":"Maltese","nativeName":"Malti"},
{"code":"mi","name":"Māori","nativeName":"te reo Māori"},
{"code":"mr","name":"Marathi (Marāṭhī)","nativeName":"मराठी"},
{"code":"mh","name":"Marshallese","nativeName":"Kajin M̧ajeļ"},
{"code":"mn","name":"Mongolian","nativeName":"монгол"},
{"code":"na","name":"Nauru","nativeName":"Ekakairũ Naoero"},
{"code":"nv","name":"Navajo, Navaho","nativeName":"Diné bizaad, Dinékʼehǰí"},
{"code":"nb","name":"Norwegian Bokmål","nativeName":"Norsk bokmål"},
{"code":"nd","name":"North Ndebele","nativeName":"isiNdebele"},
{"code":"ne","name":"Nepali","nativeName":"नेपाली"},
{"code":"ng","name":"Ndonga","nativeName":"Owambo"},
{"code":"nn","name":"Norwegian Nynorsk","nativeName":"Norsk nynorsk"},
{"code":"no","name":"Norwegian","nativeName":"Norsk"},
{"code":"ii","name":"Nuosu","nativeName":"ꆈꌠ꒿ Nuosuhxop"},
{"code":"nr","name":"South Ndebele","nativeName":"isiNdebele"},
{"code":"oc","name":"Occitan","nativeName":"Occitan"},
{"code":"oj","name":"Ojibwe, Ojibwa","nativeName":"ᐊᓂᔑᓈᐯᒧᐎᓐ"},
{"code":"cu","name":"Old Church Slavonic, Church Slavic, Church Slavonic, Old Bulgarian, Old Slavonic","nativeName":"ѩзыкъ словѣньскъ"},
{"code":"om","name":"Oromo","nativeName":"Afaan Oromoo"},
{"code":"or","name":"Oriya","nativeName":"ଓଡ଼ିଆ"},
{"code":"os","name":"Ossetian, Ossetic","nativeName":"ирон æвзаг"},
{"code":"pa","name":"Panjabi, Punjabi","nativeName":"ਪੰਜਾਬੀ, پنجابی"},
{"code":"pi","name":"Pāli","nativeName":"पाऴि"},
{"code":"fa","name":"Persian","nativeName":"فارسی"},
{"code":"pl","name":"Polish","nativeName":"polski"},
{"code":"ps","name":"Pashto, Pushto","nativeName":"پښتو"},
{"code":"pt","name":"Portuguese","nativeName":"Português"},
{"code":"qu","name":"Quechua","nativeName":"Runa Simi, Kichwa"},
{"code":"rm","name":"Romansh","nativeName":"rumantsch grischun"},
{"code":"rn","name":"Kirundi","nativeName":"kiRundi"},
{"code":"ro","name":"Romanian, Moldavian, Moldovan","nativeName":"română"},
{"code":"ru","name":"Russian","nativeName":"русский язык"},
{"code":"sa","name":"Sanskrit (Saṁskṛta)","nativeName":"संस्कृतम्"},
{"code":"sc","name":"Sardinian","nativeName":"sardu"},
{"code":"sd","name":"Sindhi","nativeName":"सिन्धी, سنڌي، سندھی"},
{"code":"se","name":"Northern Sami","nativeName":"Davvisámegiella"},
{"code":"sm","name":"Samoan","nativeName":"gagana faa Samoa"},
{"code":"sg","name":"Sango","nativeName":"yângâ tî sängö"},
{"code":"sr","name":"Serbian","nativeName":"српски језик"},
{"code":"gd","name":"Scottish Gaelic; Gaelic","nativeName":"Gàidhlig"},
{"code":"sn","name":"Shona","nativeName":"chiShona"},
{"code":"si","name":"Sinhala, Sinhalese","nativeName":"සිංහල"},
{"code":"sk","name":"Slovak","nativeName":"slovenčina"},
{"code":"sl","name":"Slovene","nativeName":"slovenščina"},
{"code":"so","name":"Somali","nativeName":"Soomaaliga, af Soomaali"},
{"code":"st","name":"Southern Sotho","nativeName":"Sesotho"},
{"code":"es","name":"Spanish; Castilian","nativeName":"español, castellano"},
{"code":"su","name":"Sundanese","nativeName":"Basa Sunda"},
{"code":"sw","name":"Swahili","nativeName":"Kiswahili"},
{"code":"ss","name":"Swati","nativeName":"SiSwati"},
{"code":"sv","name":"Swedish","nativeName":"svenska"},
{"code":"ta","name":"Tamil","nativeName":"தமிழ்"},
{"code":"te","name":"Telugu","nativeName":"తెలుగు"},
{"code":"tg","name":"Tajik","nativeName":"тоҷикӣ, toğikī, تاجیکی"},
{"code":"th","name":"Thai","nativeName":"ไทย"},
{"code":"ti","name":"Tigrinya","nativeName":"ትግርኛ"},
{"code":"bo","name":"Tibetan Standard, Tibetan, Central","nativeName":"བོད་ཡིག"},
{"code":"tk","name":"Turkmen","nativeName":"Türkmen, Түркмен"},
{"code":"tl","name":"Tagalog","nativeName":"Wikang Tagalog, ᜏᜒᜃᜅ᜔ ᜆᜄᜎᜓᜄ᜔"},
{"code":"tn","name":"Tswana","nativeName":"Setswana"},
{"code":"to","name":"Tonga (Tonga Islands)","nativeName":"faka Tonga"},
{"code":"tr","name":"Turkish","nativeName":"Türkçe"},
{"code":"ts","name":"Tsonga","nativeName":"Xitsonga"},
{"code":"tt","name":"Tatar","nativeName":"татарча, tatarça, تاتارچا"},
{"code":"tw","name":"Twi","nativeName":"Twi"},
{"code":"ty","name":"Tahitian","nativeName":"Reo Tahiti"},
{"code":"ug","name":"Uighur, Uyghur","nativeName":"Uyƣurqə, ئۇيغۇرچە"},
{"code":"uk","name":"Ukrainian","nativeName":"українська"},
{"code":"ur","name":"Urdu","nativeName":"اردو"},
{"code":"uz","name":"Uzbek","nativeName":"zbek, Ўзбек, أۇزبېك"},
{"code":"ve","name":"Venda","nativeName":"Tshivenḓa"},
{"code":"vi","name":"Vietnamese","nativeName":"Tiếng Việt"},
{"code":"vo","name":"Volapük","nativeName":"Volapük"},
{"code":"wa","name":"Walloon","nativeName":"Walon"},
{"code":"cy","name":"Welsh","nativeName":"Cymraeg"},
{"code":"wo","name":"Wolof","nativeName":"Wollof"},
{"code":"fy","name":"Western Frisian","nativeName":"Frysk"},
{"code":"xh","name":"Xhosa","nativeName":"isiXhosa"},
{"code":"yi","name":"Yiddish","nativeName":"ייִדיש"},
{"code":"yo","name":"Yoruba","nativeName":"Yorùbá"},
{"code":"za","name":"Zhuang, Chuang","nativeName":"Saɯ cueŋƅ, Saw cuengh"}
]