Start with high-confidence christian fantasy ya books, then narrow by subgenre or adjacent topics.
The Dragons of Chiril
Donita K. Paul
The Prophecy
Dawn Miller
Warrior
Beverly Davis, Bryan Davis
Diviner
Liberator
Halo
Alexandra Adornetto
Legion
Julie Kagawa, Caitlin Davies
Seraphina
Rachel Hartman
Dealing With Dragons
Patricia C. Wrede
Light of Eidon
Karen Hancock, Adam Verner
Mark of the Raven
Morgan L. Busse
Flight of the Raven
From Darkness Won
Jill Williamson
Heaven
Dragonlight
The Door Within
Wayne Thomas Batson
The Dragon and the Stone, Volume 1
Kathryn Butler
Wings of Fire
Jonathan Strahan, Naomi Novik
Torch
R.J. Anderson
The Temple at Landfall
Jane Fletcher
