Cristobal Cruz (probably the highest volume to talent ratio of any world class fighter I've ever seen) Khoren Gevor Juan Diaz Affif Belghecham Lukas Konecny Librado Andrade Juan Alberto Rosas Chango Vargas Beibut Shumenov Probably the greatest fighter arguably fitting the description is Jeff Fenech. Can't say I agree with Margarito or Calzaghe. Margarito's greatest asset is actually his angles, IMO, while Calzaghe quite obviously had a ton of talent and skill to go with his high workrate.
I thought the thread was about who was used their workrate to win matches most, but it seems the thread is about who used/uses it exclusivly without having much to back it up. My bad, I retract Calzaghe (Juan Diaz fits the description though)
Margarito. The guy has no skill. Just chin, stamina and heart. That is seriously all he has. Calzaghe did use volume but he had plenty of skill. J. Diaz used volume but he also can box. P Williams I guess he goes in there too along with his freakish size.