Anthoney Jones - Guy was countering me and I was like wtf? James Toney - Awsome countering skills. If he jumps on his bike (this was many years ago) few will catch him.
Tho i diss him a bit a guy like Mike McCallum is an excellent study. Tho unorthodox Archie Moore was incredibly effective. Sanchez and Arguello are good studies as well. If one dances around with enormous speed and reflex advantages like 60's Ali he sure knew how to counter as well. Joe Louis had some slick moves at heavyweight as did Walcott. Other great ones are Whitaker, Marquez, Pep and Duran. SRR was more of an offensive fighter but jeez could he counter. Currently Crawford is very impressive. There's a lot of various styles above.