Little Ceasar's is Detroit pizza.
Not by a mile............
Although it started outside Detroit, in a strip mall at Ford Rd & Middlebelt (the same mall as the first K-Mart), it is more closely related to what is called "Midwest style pizza". It pre-dates Domino's by a year, which is the same generic style, and was also started just outside of Detroit. But neither started IN Detroit.
Little Caesar's used to be good back in the early '60s, when it was still a single shop. We lived nearby (just a bicycle ride away) and had a lot of pizza from there. Delivery didn't exist back then.
Real Detroit pizza started at Buddy's Rendezvous, a bar on 6 Mile Rd, back in the '40s. I wasn't yet alive, but ate many pizzas from Buddy's, as well as the others that cropped up (Shield's, Cloverleaf Bar, Loui's, etc). The crust should not be heavy or doughy - it should be light and airy, almost like focaccia. The cheese isn't mozzarella - it's Wisconsin brick cheese. The sauce goes on top, but never smeared all over. It's always laid on in 2 or 3 stripes, running the length of the pizza. Jet's is a poor imitation.