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?
songs of syx deserves a mention. You get people to watch too. It seems quite fun, but I’ve only played it for 10h so far.
Factorio without a doubt, but I’m not sure it’s really a city I built more of a satellite factory vibe.