Dozens of builds. PvE build, PvP builds, CoOp builds. I've had Darkwraiths drop slab after slab. I've had red slabs drop, white. Hit the top 20 in the Book of the Guilty. I've seen vagrants in my world, and in other worlds. On and on and on.
....but there is one glaring exception.
I have never been Gravelorded. I have never seen a Black Phantom in my world.
I have invaded infected worlds, but never had them in my own. It has reached the point of being notably strange.