I am going to upset my fellow Aussie fight fans here by nominating Kostya Tszyu, like Aaron Pryor Tszyu was ducked by a lot of the AAA fighters during his ten year reign as the 140lb King. DLH, Mosley and PBF all avoided the big punching KT denying him a real marquee name on his resume. JCC was well past his best when he fought Tszyu so let's not bring him up, Tszyu lost to Vince Phillips and he shouldn't have and i look at his impressive record and have to argue that all time greatness just eludes him without a win against the fighters mentioned above. Tszyu is no doubt one of the best Jr Welters ever but just falls short of all time greatness. Had Tszyu been more active and perhaps moved up and taken the 147lb title then all time greatness would be his.
Salvador Sanchez makes it due to his wins against Gomez and Nelson, Pryor doesn't because he didn't get to fight Duran, Leonard or Hearns. Tszyu is in the Pryor category.