I'd be more inclined to say that the Elder was a concept for the leader we see in the cutscenes, the Bio Armour for Longspear, and the Badblood is pretty much the skin we ended up getting. I think you're right about the others though. I like all of the remaining ones except for the Alien Armour.
(Btw, the one you called bear-skin is actually labelled Gothic Predator in the picture itself, as in the dark-age German tribes etc).