We’ve only done the opposite of your suggestion for genres and credit roles. For artist and album names, they are configured independently from the UI language.
Yes this is expected. Unfortunately our current data source for localizations has much less complete data for album artists. So it’s possible you’ll have a localized artist name, but a non-localized album artist.
Yeah this is correct. We really never want to display a localized version of an artist name if the user can understand the native name. The type of cases where the preference order would come into play would be if there was a Japanese artist that had a different German and English localization. If you have German at the top you’ll get the German localization and vice versa for English.
Genres are localized to the UI language. Since you’re running in English you aren’t going to be seeing any of the localizations. For what it’s worth, our current localizations for Jazz, Rock, and Pop in German are just Jazz, Rock, and Pop 