Combat use has little or nothing to do with what planes are selected for inclusion in AH.
I believe it's more related to filling a "niche" in the arena.
That said, I think an F8F would be fun as hell, and a RE2005, and a Brewster, and a KI-84, and the Emily, and the B25, and the A-26 Invader, and ....well, I better stop the wish list..............