Louis, Liston, Frazier, Foreman, Ali, Holmes, Tyson, Lewis, Holyfield, Fury. I feel like i'm forgetting a few in my rush.
Andrew Golota. After outboxing Vitali and building a lead on the cards Andrew would feel no anxiety to pull defeat out of the jaws of victory because Vitali isn't an explosive KO puncher. Golota would win a decision with a KD or two.
Doesn't mean much. Younger brothers rarely think they could beat their big brother in a fight. Some boxers are humble. Tyson often picked against himself in h2h discussions.