Websites of (potential) interest….
Are you looking for books by lexile reading levels for some reason? If so you’ll want to check out https://www.lexile.com/. Here you will find a book matcher that produces lists by reading level while allowing filtering options to help you find just the right book interest wise at just the right level lexile reading level wise. You can also search by book to find out just what level it is. Take a look at it and see if it matches your needs.