My favorite is "I Wish It Could Be Christmas Everyday", because my dad liked it and we always played it while decorating the tree when I was little. It brings back nice, happy childhood memories.
Least favorite by a mile is "Stay Another Day", which is a simp anthem disguised as a Christmas song, and then "All I Want For Christmas Is You" which is excruciating. Actually, I might overrule that and say I hate "Santa Baby" more, because it's just a gold digger begging for gifts.
Favorite: https://vid.puffyan.us/watch?v=Q5T-epVCE6E
Least Favorite: Every single rehash done by some Mariah Carey or Chris Brown wannabe who feels the obnoxious need to pitch check and overly-inflect every single note of every syllable of every word of a children's Christmas song. On repeat everywhere I go.
I can't stand when people do that. The black little mermaid with the very distant eyes also does that and Part of your World really didn't need it.