Does any of those games have some kind of 'free mode'? I'm not interested in playing but rather in a casually designing city, similarly to the Townscaper game.
Cities Skylines has an infinite money checkbox if I recall correctly. You'll still have to properly design the city so the people move there and build but game money won't be an obstacle.
https://store.steampowered.com/app/1291340/Townscaper