Personally, I'd say nothing. Or, at least, whatever you say makes you, you. I don't think there's an objective/natural definition for who I am and what is and isn't a part of me. The idea of "me" is kinda made-up, so there's probably no right or wrong answer as to what exactly I label as "me."

I'm probably just saying nonsense, but this is the most coherent answer I got lol