If you are solely looking for the most snow in the area, Snowshoe or Canaan would be that - I think both average about 150” a year. I spent my 30th birthday at Snowshoe (first and only time I’ve been there) and I enjoyed the village aspect of that a lot. Personally, I wouldn’t want a house there given the drive and lack of activities in the summer but it is very nice. Of the two, I would pick Canaan given the snowfall, WV state parks nearby, easier drive, and towns of Davis/Thomas.
While Wisp/Deep Creek gets less snow (averages 110” in McHenry), we chose to buy a place here back in 2016 because it checked off the most boxes for us - high snowfall, year round activities, 3 hour drive, and a lake. It really is nice being here in the summer when it’s upper 70s with a lake to enjoy. We intended to rent this out but immediately found that we loved coming out here too much to rent it out. So we just use it for ourselves and host family/friends.
I wouldn’t pick the PA ski resorts personally given the snowfall differences compared to western MD/WV.
YMMV, happy researching!