Looks awesome! I really dig these designs - especially the ones on the far left. Armor designs for anthro characters are often super interesting, since the shapes can be so different from a normal human's, and I'd say you definitely nailed them! I could definitely imagine bunny/rabbit guards and soldiers running around in these in a medieval setting.
(On a side-note, once I get that minotaur lady from you I'd absolutely love to get an armor version as well, because you draw them absolutely fantastically)

One thing I'm noticing is the ears, though. Those seem like a major weak point. But just having them inside the helmets, like with human helmets, may mean that they can't hear anything at all...maybe have a slight bit of armor protruding from the helmet(s) to protect them?
Honestly, no idea. Not an expert when it comes to armour. Or literally anything else for that matter.

Thanks a lot! i'm very much happy that you like it my dude! the helmets on anthro characters take a while to make since it's to different from the human head, but i'm happy the way they came up! and what do you mean "once I get that minotaur lady from you" i don't get what you meant.

now i'm thinking on alternatives for the ears don't worry, i don't think adding plate amor to protect them will work, cause the ears can't move that much weight, but i'll think of something, no worries!

No problem! I definitely do like it.
Yeah, but that's what makes them so interesting!
Ah, some time ago when were writing each other I told you that I'd love to commission a ref for a female minotaur from you at some point! Understandable that you forgot though.

Dang, yeah, I didn't think of that! Their ears would probably just kinda fall down then, huh?

thats cool but his ears could get ripped off, maybe theres better way to protect it