But on a real note, I've never seen a term be used to differentiate them aside from just mashing their elven names together (e.g. mali'ker'ame) but that just seems like a mess. You could probably try and coin your own terms on that one thread for elven words.
I just call them what they look like, no matter what kind of elf they are, if they're black they're a digger to me. If they're brown they're wetbacks. I just keep it at that tbh since I rp a racist high elf.