The Rosemary Clooney Christmas Album is pretty cool as is Ella Wishes You a Swinging Christmas. My fave is the Phil Spector Christmas Album. I recall that this was an album that almost never made it. It was introduced the week after President Kennedy was assassinated in 1963, so the mood of the country was anything but celebratory. Also around the beginning of December of that year in a snowstorm, a passenger jet on approach to LaGuardia Airport crashed into several blocks of Brooklyn's Park Slope neighborhood, killing a number of people on the plane and on the ground and wiped out blocks of homes. It took a few years for that album to catch on, but it has that great "wall of sound" and all those great artists. It is bright and upbeat without being smarmy. I still have the LP in vinyl as well as the CD. Funny thing about the CD, it seems like you are not getting the "full sound" and some nuances are not there.
Two other faves are "Merry Christmas" by Johnny Mathis and "Christmas Eve with Johnny Mathis". Somewhat more traditional and I don;t necessarily love every song, but solid overall.
And finally, the Carpenters' Christmas Album is enjoyable as well.