Steve Cunningham and JMM (glass jaw is stretch in his case tbf) Cunningham has very little punch resistance but he recovers incredibly well.
Fury and Wilder are examples. Though I'm sure if Wilder actually fights somebody with a pulse, he'd get starched.
Like Floyd or something? I usually see these guys as having oki chins but great heart, guys like jmm,tito,hamed etc.
if calzaghe has a granite chin then they should definitely change the definition of granite in the encyclopedia......