As Cities Skylines II still isn’t worth it (the sub has a regular thread about that, in summary: no it’s not: https://old.reddit.com/r/CitiesSkylines/comments/1ch6lup/is_cities_skylines_ii_worth_it_megathread/) which games scratch your city building itch?
Simutrans is quite interesting, although it’s probably closer to a Transport Tycoon than a SimCity. Otherwise I tend to go for SimCity 3000.