Here are my favorite “Catholic” Christmas albums:
Creator of the Stars - Alexander Blachly Pomerium
Has traditional Latin carols and antiphons recorded a few times in different numbers of voices. Good to pray to.
Christmas around Europe - various artists
Traditional carols from the renaissance. Included is my favorite mass setting so far, done by Jan Wanski. Very good.
Christmas Chants - The Benedicte Monks of Santo Domingo de Silos
It has antiphons and some sections of the Mass
Christmas at the National Shrine - The Choir of the National Shrine of the Immaculate Conception
Mostly english carols, but some latin, and a good setting of the mass, although it is NO
Once as I remember - John Eliot Gardiner; Monteverdi Choir
His recreation of a nativity play, in choral form. Very good; has traditional carols in Latin, English, German, Provencal, French… very fun to listen to.
Les Chorales de Noël - les chanteurs de la chapelle sainte Cecile and Les petits chanteurs
By various French childrens choirs, who sing traditional French carols, and some latin ones, to a backdrop of organs. very nice, and easier than studying for my french final.
And, just off the cuff… the BEST version of “Veni Veni” I’ve ever heard was done, surprisingly, by Mannheim Steamroller