Hitler was an introvert. He was charismatic and a great public speaker, but he was reclusive and private.
Re Vader and Anakin: Anakin was a clear ISFP (emotional as fuck, rather reclusive and essentially defined the term "loose cannon"). I could buy Vader being his ENTJ shadow, but in that case he kinda sucks at being a higher Ni user.
I deliberately called Palpatine "Chancellor," because while the prequels suck (other than the CGI-tastic action sequences), his crowning moment of epic bastardry happened during Return of the Sith.