With all the polls on here, I have never yet seen one where the people involved are in an AH. So, besides polling, you also have to figure out what the TL is....
I think that Robert E. Lee and Stonewall Jackson speak for themselves. However, some of the other people may be less familiar:
Taliaferro commanded Jackson's lead division on the march to Manassas Junction, and he managed to deceive Kearny and flank him (Kearny, imagine that!) thus enabling Jackson to reach the old Manassas battlefield before Pope's force, meager though it was.
McLaws commanded one of Longstreet's "mini-divisions", but after both Longstreet and D. H. Hill were shot (thankfully neither fatally), he took command of the southern half of the field and destroyed Reynold's division, thus surrounding the assembled Yankee forces.
Bragg commanded the Army of the Tennessee (bet you didn't know that existed) and used the AoNV's success to reclaim Kentucky. To do so he defeated Buell's force (at least McCook's force) at Perryville.
Hardee, though, really was the ground commander at Perryville - plus, by fighting the other wing of the Yankee force, under the traitor Thomas, to a standstill, he enabled Bragg to reach the Ohio and so claim Kentucky even before the final surrender at Baltimore.