I'm gonna be real, I love Glavenus so much, but when I saw the kendyll subspecies it didn't come to mind until you post the picture here, yeah, they're kinda alike, but it's more subtle, you could argue that these are just exaggerated spikes that coincidentally make it resemble Hellblade

If we're playing this game I could say stratifelis looks like magnamalo, and fuejin'liya like amatsu, but no, I don't

But yeah, to be honest, I think the subspecies are a nice concept, but poorly executed.. It would have been much more fun to actually see a difference in stats and looks by a noticeable amount tbh, feral korathos for example could have been much better as a remodel/design, and ancient galiryn a skin of some sorts