Okay, I've done the city name map for Hispania and the Balears. Default name is Roman. I've put alternate Punic, Greek, Celtic, and Visigothic names, where applicable. Sorry, no Arabic names (at least for the cities I added). There's also a renaming part for each city with an alternate name for the Romans.
You would not believe how long this took.
If you ever get around to it, could you add rivers to the reference city map spreadsheet? It'll make it a lot more convenient later.