Generally, langify supports the translation into all the languages available in Shopify.
For machine translations, langify uses DeepL which supports the languages found on https://support.deepl.com/hc/en-us/articles/360019925219-DeepL-Translator-languages.
For the languages that are not supported by DeepL, it uses Google (Cloud Translation) which includes the languages mentioned at: https://cloud.google.com/translate/docs/languages.