Heinz Guderian for me.
McArthur wasn’t all. Island hopping was far more effective. Patton was a very good field commander.
I am a big fan of Guderian. But Manstein is Guderian on a much larger scale. His first great offensive achievement was the conquest of France which at the time had an army larger than Germany. Defensively, he was able to re-establish a line for Army Group South after the defeat at Stalingrad and the subsequent Soviet offensive.
Heinz Guderian for me.
..............................................
He was great. So was Rommel, my pick.