my favorites are Christmas Wrapping, Last Christmas (never got the hate!) and basically everything off of the Phil Spector and Mannheim Steamroller records. (edit: and Brian Setzer! how could i forget!) the only ones i really dislike are All I Want For Christmas Is You and any time someone covers and upbeat christmas song as an acoustic ballad- people think that’s an easy way to make something emotional and meaningful but it actually takes a lot of skill to pull of, and i’ve yet to hear anyone pull it off with a Christmas song!
i use mobile sites whenever possible, but if it’s something i use often and the app is more convient i’ll relent. looking at my home screen it’s all mostly things that don’t have a web equivalent. i’ll use an app for things that i WANT notifications for, so really only mastodon and email. for mbin specifically i use the PWA because i’m not sure if any kbin/lemmy/whatever apps work with it, and the user CSS themes are pretty neat