yes. I mean, all of the fighters mentioned in this thread aren't perfect examples - there really isn't any one-dimensional fighter, but to answer the question "who's the best one dimensional fighter" I figured it was maybe the best idea to think about which of the GOAT candidates, broadly concieved, were most one-dimensional.
Kind of by definition, if a fighter is truly one dimensional, they aren't going to do very well, but there are some very succesful one-and-a-half or two-dimensional fighters. Some are even among the best to ever do it, like Anderson.