Weeping Willow leather (Jake original, bahama llama, biota?)
Rainbow Diaseris
Acropora granulosa and lokani I think could be ultra. They're slower growers and are very nice
Icefire echinata - I don't remember if someone ended up finding some, but it definitely is in the hobby
Have we actually seen anyone with a purple monster or is that an artifact / hopeful listing?
100% just for me, but I think snake polyps deserve to be on the list too just because of how uncommon they are
All smooth skin acros are already at least bonus by default. I have a MC granulosa that grows fast enough I don’t think it makes sense to be ultra, though I think maybe some named ones could be? What did you have in mind?