I am not a lawyer, but AFAIK anything you did that rises to the required level of minimal creativity is copyrightable. If you take AI code and the do something

I am not a lawyer, but AFAIK anything you did that rises to the required level of minimal creativity is copyrightable. If you take AI code and the do something creative with it, the parts that you did are copyrightable. Someone else can still take the same AI output and do something different with it. There are a few exceptions, such as the merger doctrine, but this is generally how it works if I understood it correctly.