These arrangements are playable on both lever and/or pedal harp. There are very few harmonic adjustments, but all are indicated according to the standards of both types of harp.
Austria Still, Still, Still
Czechoslovakia Come, All Ye Shepherds; Rocking
England Away in a Manger; In the Bleak Midwinter; The Holly and the Ivy
Ireland The Snow Lay on the Ground
Poland Infant Holy, Infant Lowly; Lullaby, Jesus; O Come Rejoicing
You can see and hear a medley selected from these carols on YouTube.