Lucy Carroll on Chant

Here's a good introduction to chant, by Lucy Carrol. She
mentions:

In the wake of the Council, certain chants were culled from the great repertoire and put into a little book called Jubilate Deo. The easiest Kyrie, Gloria, Credo, Sanctus, and Agnus were put together into a Missa Jubilate Deo. The same Kyrie, Sanctus, and Agnus, with a different Gloria, became known as the Missa Primitiva.

I must confess to a hearty dislike for these re-names; I continue to call them by their Liber Usualis names. However, I have no qualms about mixing and matching other chant pieces. Our congregation at the monastery can sing the Kyrie from the litany, Kyrie VIII, Kyrie XVI; Kyrie XII Pater Cuncta (a congregational favorite); Kyrie XI Orbis Factor (a choir favorite).

They know Gloria VIII, the Ambrosian Gloria, and one psalm-tone-like Gloria in English.

They can sing Sanctus and Agnus X (Alme Pater); XVI; XVIII, (Deus Genitor Alme); and VIII (de Angelis).