I use non role playing names for cities, as well. Each city has a main name. Arcane, book, gold, etc. If the city has a strong second resource / production, I add the appropriate name after the main name. BTW, I almost always take a 'protector' at first settlement level up.
ArcaneSW BookmaxE (for city with greatest tech research production in my kingdom. You get the idea. Everyone has their own style... and I hope this helps you develop your own that works for you.