I've started reading fun chapter books to my kids. -The boxcar children (fiction) -The magic treehouse (fiction) -Little house on the prarie (non-fiction)
We use the Good and the Beautiful curriculum for our preschooler and I haven't personally bought any but I know they have a bookshop on their website. I've heard they're pretty good.
I know some the berenstain bears books talk about God, morals, and manners 😊