From the accounts I've heard of his life growing up and so forth... ESTP
He was a ringleader, bully, pulling practical jokes, etc.
ESTPs have all the same functions as INFJs, but in a different order - fwiw.
Don't underestimate STs - they more than most types can successfully manipulate the concrete world to their goals. People who make a strong impact outward as a persona could well be Ss more often than Ns who draw people into their internal vision. A strong N like Beethoven made a impact with ideas more than as a persona. His persona is strong but his ideas don't rely on it for their force whereas Hitler and MManson need their persona more than their ideas.
ESTPs are more hands on, though.
From what I've read about the Fuehrer's upbringing, he very much had an NF persona; his father, probably an SJ, abused him because he was a dreamer.
And in
Mein Kampf, his intentions were clearly mapped in his mind. By this time, he had a clear vision of a Third Reich. He was very future oriented, SPs are very present oriented.
And any dominant Extravert has power to manipulate a crowd (Martin Luther King, Jr., ENFJ, technically did this, as well), but what's different is the person's intentions, which is an entirely different conversation. One would argue that MLK was more
persuasive, but that's really just a more positive way of saying manipulative.
His interests were art, philosophy, symbolism, and history -- something that many NFs seem to be interested in. Hitler was also a generalizer -- an iNtuitive trait -- and combined with a J function, allowed his stereotypical views to be unbending.
SPs and NJs could seem a lot alike. An SP, however, is physical for the pure enjoyment, while an NJ might be physical to achieve an end.
And lastly, an F preference. Hitler's vision
was for the good of the people he considered superior (this is something that personality does not dictate). In unbiased terms, he had a dream for the greater good of his own personal view of humanity.
But that's just my impression...