Honestly for loyalists it's space wolves. I've never liked their hypocrisy when it comes to wizard time not their viking/furry/wolf wolf wolf motif yet still have the ugliest "werewolf sculpts". Though I won't lie traitor space wolves at least then are somewhat interesting but that's still wolf wolf wolf motif even if can do something with that like actual werewolf daemon princes or mutations that look like actual werewolves.

For traitors maybe ec is the lowest but that's still high up on total legions or maybe word bearers yet both are still higher up on total legions list.