<i>A Toad for Tuesday by Erickson </i>is a little more than a “first chapter book”.
We enjoyed the American Girl Molly books as free reads. I have not read all the American girl books, so I can’t make a sweeping recommendation for those, but guess many others would be fine too.
Freddy the Pig books. We love these! You may want to pre-read to see if this works for your family. They are very “human” ; that is to say there is not always appropriate conduct and some mild language, but we found it a nice introduction to realistic view of the world. Of course wrong behaviors are not promoted in the book, but just as a part of a normal narrative of characters interacting. Again, just see if it is right for your family.