I’ll Be Gone for Christmas by Georgia K. Boone (f/f)

The Nightmare Before Kissmas by Sara Raasch (m/m)

Make the Season Bright by Ashley Herring Blake (f/f)

The Merriest Misters by Timothy Janovsky (m/m)

This Christmas by Georgia Beers (f/f)

Bonus: These are all Adult Romances, but for YA, check out Make My Wish Come True by Alyson Derrick and Rachael Lippincott (f/f)  and Flopping in a Winter Wonderland by Jason June (m/m)