After creating more listings and realizing this is a huge issue with Google Maps using place names instead of the city, I decided to give Mapbox a try. I can confirm that Mapbox creates the cities properly and avoids using irrelevant place names with the public key.
Unfortunately, a secret key that uses the URL restriction does not load the map nor does it create the regions. This bug was confirmed here.
Is there still a plan to add two keys for Mapbox like Google Maps as mentioned in this post?
Unfortunately, there is no way to limit or cap the billing in Mapbox so there is no workaround to use the public key.
I kindly ask that the plan to add two keys for Mapbox be moved up on the priority list. There would be great value to having a functional Mapbox integration to create accurate regions, as well as provide a cheaper alternative to Google Maps.