1) Nat King Cole 2) Mannheim Steamroller 3) Vince Guaraldi Trio. The reason Vince's album became successful is that it was the "It's a Charlie Brown Christmas" album.
Other top selling albums that are well known include:
1) Bing Crosby - White Christmas 2) Josh Groban 3) John Denver - His Christmas show had the most viewers of any Christmas show in history. I believe it was over 60 million viewers.
One of my favorites is Shania Twain’s Christmas album; I don't know what songs she sang, but the album cover was awesome! 😊