Of course you can be a smart alec and say Judit Polgar never officially won the women's world championship...
I never followed chess PLAYERS too closely. I do know some names, but not enough to respond.
Keres for sure was a gladiator of system and Fine was a killer of system. but the system ignores the trophies because those are means of entertainment. and those dogs are harmless without permission or some kind of breath tension that they lack while playing.
viktor Korchnoi. that close loss vs Karpov comes to mind
He had two of them, even. And that's the Karpov that had 5-0 against Kasparov after 27 games...
Me hehe xd
Paul keres , Vassily Ivanchuk , Korchnoi