There was a lot of Teutonic Odinism in the Nazi party and in the symbology that they used for their regalia. I do not believe that Hitler was Catholic nor do I believe that he was Christian by practice.
He was born and raised Catholic but it obviously didn’t stick. People try to pin it on Lutherans too, since that was the State Church of Germany. The Nazis coopted it and warped it badly, objective being to thoroughly undermine any Christianity there and replace it with their own racial folk “religion” which was shot through with Teutonic paganism as you note.
What book did the Nazis use as their bible?
Not Niccolo Machiavelli’s “The Prince”
Not the Protocols of the Elders of Zion
It was a book titled Germania by the ancient Roman histrorian Tacitus.
Read about it in Christopher Krebs book: “ A Most Dangerous Book:Tacitus’s Germania From the Roman Empire to the Third Reich