I forgot The Lion in Winter counts as a Christmas movie, that’s a great one.
Some of the ones that I usually watch around Christmas:
National Lampoon’s Christmas Vacation
Die Hard (sometimes I throw in Lethal Weapon as well)
Black Christmas (1974 one, the remakes were awful)
Gremlins
It’s a Wonderful Life
Ernest Saves Christmas
Scrooged
Home Alone
Silent Night, Deadly Night 1 and 2
Elf
Anna and the Apocalypse (saw it for the first time a few years ago and it stuck with me)