Nice quiz idea. Anaheim probably shouldn't be included based on your directions that it's based on the teams' *first* name, and Anaheim comes at the end of Los Angeles Angels of Anaheim. Still, nice quiz indeed.
Read the quiz title "Geographic sports team names". In this quiz you are supposed to name all of the unique first names of teams. The Phoenix Suns and the Arizona Cardinals... Yes Golden state is in Oakland but that's not what they are called..
Update needed: Atlanta is now 4 and Minnesota is now 5 with the MLS expansion. Los Angeles is now 8 with the Rams and Chargers moving, which gives San Diego 1 and St. Louis 2. And Vegas will need to be added with 1 with the NHL expansion next season.
They are both in there
Austin now has a team in the MLS.