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.
Ring The Bells - Eurobeat Union
For some reason the only real version I could find on YouTube is the first song in Zenki’s Christmas Touhou Eurobeat Mix and it’s kind of ironic because it’s the only song in that mix that is actually Christmas related.