About time someone mentioned Sugarbush. Stiens does get groomed a few times a year and qualifies for the list. Ripcord is groomed more often, and Organgrinder even more so than Ripcord (and usually one of the two is groomed). Those are all steep groomers for sure.
Steins gets groomed more often now almost once a week if not a little more. OG rarely groomed but Ripcord almost every night. Not grooming OG all the time takes pressure off Downspout.