Adding onto cbgiggles kid head canon here

Florida cried when they got into colleges/move out

New York's never going to live down the fact that he lost Mario kart to an eleven year old

At least one of them gets to be taller than Florida and they bring it up anytime they come home

They pick up expressions from all of the main 6

The multilingual chaos that comes with six parents who all know how to speak different languages (Dutch for New York, French for Louisiana, Spanish for Texas Florida and Cali, and DC and Cali have both picked up languages outside of those)

The music taste is all over the place

They've blackmailed at least one parent