LOL, yea the common Hylos are hard to kill. Some of the sunsparklers have been less hardy for me. Steel the Show is mushy.
Oh, the non-tender Petrosedum are fine. This is mostly the rupestre group (Blue Bird, Blue Spruce, Angelina....). The ones that are doing bad are the tender ones, mostly the mexicana group and similar ones (lemon ball, yellow bouquet)...... Wait, aren't those still Sedum? Can't remember.
Chocolate ball is fine for me right now; just dehydrated.
I've been growing Sedum for a long time, usually they do fine, but I think the combonation of really dry weather and the cold snap kinda freeze-dried them. We are having a few days with no hard frost, I might water some of the really dehydrated ones?