This has been asked a few times before. You may be interested in the answers from u/commiespaceinvader in these past threads:
https://www.reddit.com/r/AskHistorians/comments/512kke/is_it_true_that_hitler_stalin_trotsky_tito_freud/
https://www.reddit.com/r/AskHistorians/comments/55nzcp/stalin_trotsky_freud_and_hitler_all_lived_in/