Berlin has pretty good statistics and given that it's a large city it could work in similar ways as the Russia (Moscow) statistics.
Maybe we could add it given that the other site only allows usage of the top 20? (I'd be happy if the lists would stay, though, I don't mean to replace them but just to add the Berlin lists).
https://daten.berlin.de/datensaetze/liste-der-haeufigen-vornamen-2021
Please rate my list:
https://www.behindthename.com/pnl/6232