Basically, for most types of international cuisine, the answer is NYC. NY also wins the crown for pizza, and I'd even argue best steak. It has quite a few holes, however.
Best sushi goes to CA and Hawaii. Native Hawaiian food is trash, though.
Best Asian food goes to CA (San Fran specifically).
Best BBQ is split between several states depending on what style you like -- Kansas, Oklahoma, Tennessee, Texas, with honorable mention to Missouri and Georgia.
Louisiana owns cajun and creole food, which is great.
p good analysis. Though i'm surprised Illinois/Chicago isn't getting some pizza recognition.
personal preference is Louisiana/Cajun. The varying foods/spices, whew, slap my momma with the hand of an angry god type of good.
Chicago for pizza? Yeah, I totally want a bowl of sauce.