Um, it's FC Cincinnati - not Cincinnati FC.
FWIW, the actual formal name of the club is Fußball Club Cincinnati (a nod to the city's German heritage). But no one ever uses that name (or Football Club Cincinnati). It's always either FC Cincinnati or FCC. Personally, I would have preferred a mascot/nickname instead, such as Cincinnati Chilis or Cincinnati Rivermen.
And what's with St. Louis? Their name is apparently written as St. Louis CITY SC (CITY in all caps).
It is odd that so many MLS teams have adopted naming conventions from overseas rather than follow the traditional American sports team naming of {City/State} {Mascot/Nickname}. Of the 29 current MLS teams, only 11 have a mascot/nickname as part of their team name (and four of those tack on "FC" at the end). The others all use one of:
United
Union
FC (or Football Club)
Sporting
Inter
SC
City
Real