Pex sent me his KillerSWARM recently and it's waaay up there. I thought that his Painapple was the hottest, but I tried KilkerSWARM then tried Painapple right after. Both are searing hot, and I think they're about the same heat, they just burn in different places. Both are the hottest I've tried.
https://www.pexpeppers.com/product/pexpeppers-killerswarm-hot-sauce/
https://www.pexpeppers.com/product/pexpeppers-killerswarm-hot-sauce/