What is your cat's name vs. What you call them?

My Cats are, in photo order

Phoenix: Fifi, Nix, Nixy, Joaquin

Oogie Boogie: Oogie, Oogster, Boogie, Boogie Woogie, Oogs

Wendigo: Wendi, Wendissimo, Wendigone, Wendiwent, Go-Go