Rommel - He was a superb leader, who outwitted the Allied generals on more than one occasion.
And yet it was the Allies with their superior intelligence who were constantly able to outwit Rommel too. Whenever a ship (even a single ship) would set sail for North Africa they always knew about it and British aircraft would end up sinking it; Rommel suspected a conspiracy because the British were so on target.

Hitler was the real stumbling block for Axis expansion; he believed in his own superiority over his generals, when in fact he was an incompetent, stubborn, tactically-inept general.
Nonetheless, it was Hitler who was the reason why Fall Gelb ever happened. The German generals had doubts of its success but Hitler pushed through with it anyway, and as we all know he had France on its knees within six weeks. Admittedly, the traits you claim Hitler possessed are true, but stating that he was the stumbling block for Axis expansion is incorrect since he was actually the main individual who pioneered the creation of a new German empire, and thanks to him the Axis possessed control of practically the entire of Europe.

Rommel, von Manstein, von Rundstedt and Guderian were some of the best commanders, but they were hamstringed by Hitler's irritating
I can understand why you say Manstein, Rundstedt and Guderian, but with Rommel I always become suspicious of people who state he was a fantastic general because they tend to be Rommel fanboys.