For starters, 'Donny' literally works for my real name. Donatello's also a serious nerd, which lines up with me. And the bo staff is simply one of my top 3 favorite martial arts weapons.
Donatello by a mile
Then Leo and Raph
Michelangelo is last - he was gimmicky. It always seemed that he was made up by some 60yo dude in a boardroom trying to be up with "what the kids are into these days" ie he felt like he was there to sell toys.
If you ever watched The Simpsons, he was like "Poochie"
Raph is the realest, just fuck everybody up.
Mikey is the runner up coz Nunchuks are too sick and he's always really fun in any game he's in.
0 interest in the other 2 personally. I usually like staff characters but Don has less flare coz he has the gadget side, not my thing.
Leo loses by default coz I don't like katana characters.
I like them all equally as they all of aspects that I like and all have aspects that I dislike. If I were to choose the closest one to me, there isn't one as I see myself as a mixture of Raphael and Leonardo.