This site also has a statistic:
https://www.baby-vornamen.de/Namensthemen/Charts/Beliebteste-Vornamen-Deutschland-48.php
Top 30.
They are doing it in a similar way too Knud but not combining spellings. They get their data in the same/a similar way as Knud. Maybe these can be added?
I would like for Knud's data to stay as well, though. But it is interesting to have a top 30 and no combined spellings.
Please rate my list:
https://www.behindthename.com/pnl/6232