I voted Soldier and Queen because that's all there is. Drones and Soldiers are the same(I use the term Warrior for adult Aliens), Runners and PredAlien are Warriors born from different hosts, Praetorians seem to be Young Queens to me, and the Newborn is an abomination. As for designs, I prefer the orginal warrior look from Alien, A:R, and AvP(I guess most people call that the Drone).