I'd add an Admiral Piett and his first officer to it, though I don't know that guy's name... Or would Piett not really count?
One could also add the Rebel's in the brown-green uniforms with the yellow triangles on the hats, as well as Technicians ala the Yavin Tech (though they had pants tucked into their boots at Endor). The Rebel's in the brown-green uniforms though are fairly common in the hangar as well as at the briefing.
I would also include the Rebel (Nik Sant) in Biker Scout Disguise too, especially since he's even made it on Hasbro's radar.