I have my own weighted criteria that is a bit different than the op.
When it comes to skiing I am very crowd adverse; when it comes to snow I am a snow quality snob. I also like high speed cruising on the groomers, although now that I am an old guy I like cruising but I pick my spots where I go fast. I try to avoid moguls unless they have a foot of snow on them, so I like winch-cats, wind sift, and runs that don't get enough traffic to create moguls.
In no particular order:
Aspen, one of the least crowded of any major US resort even on a powder weekend, near perfect weather whenever I have skied there. Bonus points for an outstanding transit system. According to a bus driver, on the Saturday of the X games a few years ago they carried over 50k transit riders.
Alta/Snowbird, best combo of terrain, snow volume and snow quality. I won't go near the place on an over crowded powder weekend but that is what Brighton/Solitude are for. For me a great powder day is NOT 1 hour of untracked powder skiing followed by 5-6 hours of cut up trashed snow. Bonus points for cheap accommodation in nearby Sandy.
Jackson Hole, fabulous terrain and variety. Needing to line up mid week at 6am at the Gondola or Tram on a powder morning and getting to watch VIPs crash the line is not for me. However by avoiding these 2 lifts and avoiding the Thunder Chair I was able to find untracked foot deep powder on other parts of the mountain until near noon. Bonus points for cheap accommodation in the nearby town of Jackson.
Big Sky, very uncrowded especially on the Moonlight Basin side. I had a boot top powder day there a couple years ago and there was a steady 12 person lineup at the 6 pack chair so I gravitated to the fixed grip double where I was skiing runs where I was the only person skiing and I thought I was back at the Burfield Chair at Sun Peaks.
Sun Valley, best high speed cruising in North America. They don't get a ton of snow but if it is a poor snow year, they have 500 snow guns, so no worries. Mostly uncrowded with tons of lift capacity.
There could be a separate list for the British Columbia Interior. Suffice it to say that just about every small town has turned or tried to turn their local ski hill into a destination resort. The result is that B.C. is overbuilt for lift capacity. Except that every town has an unwritten "15cm (6") Rule" wherein if it snows 15cm overnight, everyone pours out of the woodwork to ski and then after a couple hours or so people go back to school or work or to the back country and some business that were closed for the morning reopen. I should give a shout out to Whitewater near Nelson, B.C. Whitewater gets so much snow that the locals are jaded. So if it snows less than 15cm overnight, no one bothers to go skiing.
Castle Mountain. Tucked away in southern Alberta, I like to tell people that Castle is the greatest mountain in North America that you have never heard of. There are 4 chairs, two of which deliver 2800' vertical and it is a little like Snowbird when you get off the upper chair. Go to the right and you ski along a cat track and drop into bowls or tree runs. One blue run and the rest black and double black. Go to your left and the cat track delivers more black and double black runs. A very windy area that has wind sift which means the wind moves snow around to fill in tracks and prevent moguls from forming without it even snowing. If it wasn't for local school trips this place would be completely empty mid week. Grade school kids are not allowed to ride the chair to the upper mountain.
. I once showed up there on a Monday morning after a 3 week snowless brutal Alberta cold snap had ended with a reported 20cm snowfall that was actually 25-30cm and there was all of 20 skiers in line first thing in the morning.
Copper, Winter Park, and Steamboat, I have 3 days at each and was very impressed with terrain and tree skiing but weekend crowds are a concern. That being said the Eagle Wind area of Winter Park delivered boot top turns in the trees several days after a storm and Copper had short lift lines on the Sunday and Monday of Presidents Day weekend during a storm as long as I stayed on fixed grip lifts. Loved the tree skiing terrain at Steamboat and nice town.
Sun Peaks, my home mountain with probably the best high speed cruising in Canada (there is even a run called Cruiser), along with some of the driest snow and is very uncrowded especially on the long slow Burfield Chair which most non locals ride once and then never come back. I also don't like fog and while Sun Peaks gets it share of fog it is almost always just the upper mountain in the fog and the mostly treed lower mountain has 4 and a half chairs (mid terminal on the Burf) that are usually fog free.