Err...A bit confused with the armors

OK, I'm a little confused as to how many 15K, 10k, 5k w/ek sets there are.

So far (to my knowledge), there are:

15K primeval (end-game, like GW:F > 15k Canthan
15K sunspear (??)
10k Ancient
5K Vabian
1k (not sure) Istan and Sunspear armor

Is that right? Am I missing anything?

I've heard of Bone Palace armor, what is that?

Thanks in advance.

Bone Palace armor is Ancient armor. And I think you've covered all the types of armor.