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.
Pentatonix do it SO WELL. Which sucks because they put it on an Xmas album so I hate that.
In their defence their rendition of The Sound of Silence is also amazing so…