Comparison of ResourceBundle::getLocales and Weblate languages.csv

Complete list of locale codes in ResourceBundle::getLocales and the name of the locale printed out with Locale::getDisplayName($locale)

Complete list of locale codes in Weblate languages.csv and the name of the locale printed out both from the Weblate list itself and with Locale::getDisplayName($locale)

Comparison of ResourceBundle::getLocales and Weblate list. Which language codes are in both, which are only in ResourceBundle::getLocales and which are only in Weblate.