Living Lightning and Rawhide Kid having to arm wrestle over that 4th place spot... Rawhide proposed naked mud wrestling, but Lightning wasn't down for that
Tough one because I have fond memories of my Kid Colt comics from childhood, but went with Firebird (for WCA), Two-Gun Kid and Red Wolf (Avengers-adjacent), and Rawhide Kid, well, I dont know why, slightly higher profile in recent years.
Since I just voted big-time yes to the original Rangers, will add later member and Avenger Living Lightning also absolutely needs to be done. Heck, I'd go for more recent recruit, the alien Fifty-One. You have to respect the one alien who didn't land in New York City and it's environs.