Calzaghe has fought nothing but bum's for a trinket title in his hometown. Anyone prime have been smaller.. and the rest have been hype or at the end of their career. Kessler has been his only legit opponent and he had a badly torn knuckled-hood.
Don't have a top 100. Posting a bunch of names of fighters most here have never seen, i included, is pointless. If you want to post your Top 100 and where Joe is, be my guest.
You asked. Some names that surpass Calzaghe in a resume criteria only, in no particular order: Sugar Ray Robinson Henry Armstrong Harry Greb Sam Langford Roberto Duran Ezzard Charles Benny Leonard Muhammad Ali Willie Pep Archie Moore Sugar Ray Leonard Joe Gans Sandy Saddler Marvin Hagler Carlos Monzon Pernell Whitaker Joe Louis Gene Tunney Julio Cesar Chavez Barney Ross Tony Canzoneri Jose Napoles Ike Williams Salvador Sanchez Mickey Walker Emile Griffith Alexis Arguello Fighting Harada Thomas Hearns Roy Jones Jr. Jim Driscoll Kid Gavilan Carlos Ortiz Bob Fitzsimmons Evander Holyfied Michael Spinks Packey McFarland Terry McGovern Joe Walcott Charley Burley Rocky Marciano Duilio Loi Aaron Pryor Tommy Loughran Wilfred Benitez Nicolino Locce Jake Lamotta Ruben Olivares Dick Tiger Joey Giardello Tiger Flowers Tommy Ryan Carmen Basilio George Dixon Owen Moran Jimmy McLarnin Abe Attell Lou Ambers Luis Rodriguez Kid Chocolate Vicente Saldivar Manuel Ortiz Sammy Angott Bob Montgomery Young Griffo Harold Johnson Johnny Dundee Johnny Kilbane Mike Gibbons Freddie Welsh Jimmy Carter Kid Lavigne Beau Jack Tommy Gibbons Sammy Mandell Nino Benvenuti Flash Elorde Jackie Kid Berg Ismael Laguna Battling Nelson Gene Fullmer Ted Kid Lewis Billy Petrolle Jack Britton Holman Williams Lloyd Marshall Floyd Mayweather Erik Morales Marco Antonio Barrera Oscar De La Hoya Bernard Hopkins Azumah Nelson Jack Dempsey Joe Frazier Mike Tyson Fritzie Zivic Mike McCallum Hector Camacho Felix Trinidad Manny Pacquiao Credit to sweet_scientist for the majority of the list, with a few names added in by myself. Keep in mind there are undoubtedly many names I forgot.
Langford couldn't even win a title. You'll cite racism or something for him being unable to do so, but that is no different than what happens to any Welsh fighters today, hence Calzaghe having to fight the slugish Hopkins of today in a mismatch of a fight rather than the fairly good Hopkins of the earlys 00s. You cannot logically have Langford above Calzaghe.
Whatever you say. He never even fought for a legitimate title because of racism, and his resume is about 100X better than Calzaghe's, and that is close to literal.
I'd rather not get into Langford with someone like you, but a fighter who fights all the best from LW to HW(the ones he didn't fight largely due to being ducked) is bound to have some losses, especially when a portion of the fights were thrown, which wasn't exactly uncommon in those days. Very common in fact.