quite a bit.
Enough to know that they weren't "the good guys", but simply more evil.
Of course you never know which info is fake, at the same time I consider the Nuremberg trials to be basically fake, because almost no one got trial'd, and only a few were imprisoned, even less were killed - if even that happened.
To my knowledge there has not been an actual denazification. Medical doctors walked. Einsatzgruppen walked. Politicians walked. Judges walked. Elite families walked. It's disgusting.
I even tend to think that maybe Nazis were even a fully controlled operation, possibly some kind of test for the Germans. Or some kind of alpha test for technology like TV hypnosis. Something like that.