Glen Edwards was, I think, the TP lost in the crash of the YB-49 - and after whom Edwards AFB is named. Bob Cardenas also flew the B-29 mothership for Yeager's Bell X-1 exploits.
Other than the various Horten and Northrop designs, the only other flying wings I can think of off-hand are the Fauvel gliders and motor gliders - any others?