For air, I’d submit Adolph Galland, navy Wilhelm Canaris and Isoroku Yamamoto, land Patton, Rommel, Bradley for consideration on the list of best.
For worst, there ought to be a place for both Montgomery and Eisenhower on the list. Probably MacArthur, as well, certainly Halsey.
Canaris was Chief of the Abwehr[ German Military Intelligence], and held no sea commands in WW II.