This is my take on who was the best fighter at the weight. Not necessarily the best Champion. Or maybe it is. Its just a list I threw up.... I don't know. It just grew on its own....

HW - Jack Johnson
CR - Holyfield
LH - Archie Moore
SM - Calzaghe
M - Hagler
LM - Winky Wright
W - Ray Robinson & Henry Armstrong
LW - Chavez
L - Duran
SF - Arguello
F - Willie Pep
SB - Wilfredo Gomez
B - Manuel Ortiz
SF - Khaosai Galaxy
FL - Jimmy Wilde
LF - Humberto Gonzalez & Myung-Woo Yuh
ST - Ricardo Lopez