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.
I like the ones about Jesus, angels, blessings. I have total disdain for Santa stuff especially Jingle Bells assigning him the power of omniscience and the right to judge your soul. It's almost like someone who hates celebration of Jesus, God & Holy Spirit was trying to fill His niche with a toy commercial mascot.
I'm also a sucker for All I Want For Christmas Is You.