And the greatest leaders? (minus Jedi)
Well you have Admiral Yularen. Other than him, I'm not so sure. The Jedi were the real leaders of the Clone Army throughout the war.
Though I do believe Jan Dodonna was a leader during the war.
Edit: Yes. Jan Dodonna was a commander during the Clone Wars and Stark Hyperspace War. He co-wrote a book on modern space combat. A Star Wars "Art of War" if you will.