I have a friend that made four books on Amazon with superheroes, and yet no thread with Amazon books.
MY Friend's books are...
https://www.amazon.com/Shadow-Killer.../dp/B01JVFKK54
https://www.amazon.com/Shadow-Killer.../dp/B072MXKTMB
https://www.amazon.com/Shadow-Killer.../dp/B08FJGGMWM
https://www.amazon.com/Marcus-Interg.../dp/B08K4X8DBT
Add your own Amazon books if you want?