Game Mechanics: Decaying skeleton aggro

[Nirgon]

I know the ones in the Freeport deserts did.

Nektulos definitely didn't, just the regular skeles.

Can't say for sure about Gfay.

I also recall the Nektulos wizard portal was a tri spawn with a rarely spawned lesser mummy or zombie (night time only + rare?).

The skeleton ruin out near EC entrance had a single spawn like this too for a mummy and iirc from checking it here, there aren't enough mobs @ that one.

It was a very popular camp on live.