I'd ask your local children's librarian to point out the "emerging reader" selections to you, and bring home a variety-- see what clicks.
Different kids have wildly different tastes.
DD liked not the Bob books but a snarkier full-color series... trying to remember what those were. Ahhhh-- looked it up on Amazon.
Now I'm Reading Those are really lovely-- and more interesting/complex than the Bob books, IMO. They have more of a Sandra Boynton kind of feel to them, plot-wise.
Dr. Seuss, of course.
Henry and Mudge.
Biscuit.
There are also phonetically controlled readers for Clifford the Big Red Dog. My DD4 loved those as she was learning to read.
