My favorite kind of ethnic food? That would have to be Sicilian or I would be in big trouble. Bada bing, ba da boom. Yes, Sicilian is different from Italian. You have Sicilian, Tuscan, Roman, Ligurian, and Neapolitan cucina, as well as basic diferences between the north and the south.
They are as uniquely different as are Tex-Mex and Mexican, or Mexican and South American, which are my next favorite cuisines. Unless I'm hungry for Cajun or Creole, of course. Mmm, I can't ignore Japanese or Chinese either, or India's Tandoori chicken and curry. Let's face it, I adore all ethnic foods!