Here's a few webcam pages that I like to frequent:
Attitash - Cams showing both base areas:
https://attitash.com/the-mountain/mountain-conditions/mountain-cams.aspx
Attitash Honorable mention - Attitash Mtn Village cam which has been crazy awesome to see a different angle of the Mountaineer construction:
https://attitashmtvillage.com/about-us/web-cam/
Mount Sunapee - Two base area cams (Spruce and Sunapee Lodges), Summit Cam, and Sun Bowl base cam:
https://mountsunapee.com/the-mountain/mountain-conditions/mountain-cams.aspx
Waterville Valley - Moveable base cam, Moveable Summit/Schwendi Hut Cam:
https://waterville.com/cams and
https://waterville.com/cams-base
Sugarbush - Literally 14 different cams around the resort - including 6 lift cameras (some are hidden under tabs near the bottom of the page):
https://sugarbush.com/mountain/webcams
Bolton Valley - Base cam, and Summit cam (great for catching sunsets over Lake Champlain):
https://boltonvalley.com/the-resort/web-cams/
Stratton - 4 different cams located around the mountain (Summit, Mid-Mountain, Sun Bowl, and a moving base camera):
https://stratton.com/the-mountain/webcams
I do like Killington's webcams, but I wish there were more of them since the resort is as large as it is. The Peak 360 camera is honestly pretty useless. Yeah you can look around, but it's all still images.
I also frequent Smugg's cameras - though I do also wish they would modernize a bit. I think the two cameras are the same ones they've been using for 10 or 12 years now.
More honorable mentions: Loon's base cam, Bretton Wood's summit cam, Mount Snow's cams, Gore's 3 cameras, Burke's Mid-Burke cam, and the MRG webcams. I also very much love reading snow reports. I just wish many areas would get back into the habit of showing where snowmaking is ongoing.