Bit of a free for all and not in order - but here goes ...........

Sugar Ray Robinson
Henry Armstrong
Willie Pepp
Muhammad Ali
Roberto Duran
Jimmy Wilde
Benny Leonard
Julio Cesar Chavez
Pernell Whitaker
Sandy Saddler
Sugar Ray Leonard
Harry Greb
RJJ
Sammy Langford
Ricardo Lopez
Charlie Burley
Hagler
Monzon
Archie Moore
Gene Tunney
Larry Holmes
Aaron Pryor
Eder Jofre
Joe Louis
Ezzard Charles
Alexis Arguello
Billy Conn