Below are a few scores that Lyricora has edited for their purposes:

Bethlehem - William Billings
SA(A)TB 

O Jesulein Süß, O Jesulein Mild - Samuel Scheidt/J.S. Bach
SAT(B)B
This compilation juxtaposes two settings of the same text by two German masters.

Shiloh - William Billings
SATB

Stille Nacht - Franz Xavier Gruber, arr. Paul Crompton
SATB 

Verbum Caro Factum Est - Hans Leo Hassler, arr. Dan Schmunk
Double Choir: SSAA, TTBB