Ashley McIntosh is the one that always comes to mind for me. Over his career, absolutely towelled up every gun full forward he ever played on. Haven't heard his name mentioned in the mainstream media for the better part of 15 years.
Ashley was a darn good player, but was always very media shy. I reckon you would struggle to find a tv interview with him, seemed to disappear when the cameras were around.
He is one of the genuine champion father & son combinations. His old man was a AAA grade player.