I know the Mariah Carey song is hated because its overused, but its also objectively a well produced piece of pop music.
My favorite though is O Holy Night. Performed well I want to stop and listen to it. It moves me, and I dont give enough of a fuck about religion to call myself an athiest.
Father Christmas by The Kinks is my all-time favorite Christmas song.
https://youtu.be/fPPCPqDINEk?si=8V0_zTG1MOv2luIx
I have a very weird history with and a love/hate relationship with Christmas, but this song is always atop every Christmas playlist I’ve ever made.