I wonder what the in-universe reason is for why the founders of so many American cities in the DCU felt compelled to give them extremely generic names. Metropolis, Central City, Star City, Coast City, Midway City, Gateway City, Hub City, Brick City -- in the Supergirl show, we've even got "National City," which I think is new. And apparently there's an actual Civic City associated with the JSA, not only generic but redundant. Not to mention Gorilla City, which, considering that it's a city founded by gorillas, is the most generic name imaginable -- like humans naming a city People City.
There are a few more interesting names out there. Gotham City is distinctive, and it's named for a location in England, so it's plausible (except that it's an alternate name for New York City, which also exists in the DCU). Keystone City and Opal City are okay, a bit contrived-sounding but descriptive. Smallville is incredibly generic, but at least it breaks the pattern. Ditto for Ivy Town, which sounds like a generic university town. You've got some distinctive names like Happy Harbor and Bludhaven, two examples from entirely opposite ends of the spectrum. And there are a couple of distinctive names from imported universes, like Fawcett City and Dakota City.