As someone who grew up in a Christian homeschooling family, I know first-hand that desperate search for good, uplifting literature! And while there are tons of books that recommend classic (old) books, there is not much out there for the newer (and often self-published) books.
The below list is full of books that I have either read personally or have been suggested to me by a trusted friend. Most (if not all) of the authors are Christians, and all the books will be clean and written to encourage, uplift, and entertain (not preach) to readers.
Annals of Alasia, by Anne Douglas Lima
A Sidekick's Tale, by E S Grayson
Beyond the Tales, by Tricia Mingerink
Calligraphy Guild, by R M Archer
Dragons in Our Midst, by Bryan Davis
Escape from Mathebos, by Sarah Rodecker
Fairest Son, by H S J Williams
Knights of Tin and Lead, by Emily Hayse
Out of Time, by Nadine Brandes
Seventh City, by Emily Hayse
The Blades of Acktar, by Tricia Mingerink
The Ceristen Series, by Verity Buchanan (currently out of print)
The Chronicles of Prydain, by LLoyd Alexander
The Dragon Keep Chronicles, by C M Banschbach (currently out of print)
The Firethorn Chronicles, by Lea Doue
The Gift of Dragons, by Rachel A Greco
The Great and Terrible Quest, by Margaret Lovett
The Ilyon Chronicles, by Jaye L Knight
The Katrosi Revolution, by Jamie Foley
The Pirate Hunter Chronicles, by Sarah Rodecker and Helena George
The Red War Annals, by Helena Š. George
The Rise of Aredor, by Claire M Banschbach
The Starchaser Saga, by Renee Dugan
The Tales of Ambia, by Allison Tebo
The Weaver Trilogy, by Lindsay Franklin
The Wilderking Trilogy, by Jonathan Rogers
The Windward King, by K T Ivanrest
The Wingfeather Saga, by Andrew Peterson
We Could be Villains, by Megan McCullough