Finally someone put this up (Just noticed though lol). While Rotom-H gets Pain Split pokebank, it's still nice, but that makes Resto Chesto -which you forgot to mention- set more viable, especially with the new mechanics of Rest.
The scarf set should always have Will-O-Wisp on it, as Scarf WoW will cripple Mega Khan, Garchomp and Mega, Mega Mawile (which will Sucker punch predicting Overheat, so WoW works better), Terrakion, and other common physical threats.
What I also like about the scarf WoW set, is that if the opponent happens to be Gliscar and still didn't activate Toxic Orb Yet, you can outspeed it and use WoW to prevent poison heal.
not to mention scarf Volt switch is something always good.
HP grass is Viable in UU, HP Ice is more Viable in OU, I think you should write that.