Ismael Laguna would beat Roberto Duran Prime Frazier always beats prime Ali Jeff Fenech would beat Wilfredo Gomez Jeff Chandler would beat Lupe Pintor and Carlos Zarate Chris Eubank beats James Toney and RJJ at 160
Leonard was 158-20 when he lost to Jack Britton I don't care who he fought, I care who he beat. Nobody you listed is even a standout except for Britton, who he never beat It's sad that he never got to have that bout with Mickey Walker due to his cracked thumb but I suspect he might've lost anyways
Naseem Hamed is one of the most overrated fighters ever. Yes he had great power and reflexes but his opposition was mainly against has beens and never wases and had one of the worst boxing IQs out of any champion that I have ever seen. MAB proved how dopey he was in the ring when he made him look like a clueless fool.
Duran-Leonard 1 is a boring grapplefest. Pryor-Arguello 1 was too one-sided to be a great fight. Whitaker beats Duran at 135.
Rocky Marciano would hold all the major belts in any era and would do so until 2150-2250. Barrack Obamas wife is a man. Floyd Patterson took two dives against Sonny Liston.
Juan Manuel Marquez is massively over rated. Ricardo Lopez is extremely over rated. Lomachenko would lose to most great lightweights. Duran is one of the most skilled fighters ever shown on film (will be unpopular for some )
Earnie Shavers's power is egregiously overrated. Joe Louis would lose to most top heavyweights of the past thirty years. Jack Dempsey looks like crap on film when beating Willard.
Haven't seen any Dundee before but his technique and recognition/reactions seemed awful. He was a 100+ win middleweight champion? https://streamable.com/iku98