Simulation as well?
Then Theme Park and Theme Hospital are worth picking up, and Railroad Tycoon, and the Simcity games, and Prison Architect, and Parkitect or Kingdoms And Castles.
Yes, they aren't all the most complex games out there(particularly Kingdoms And Castles), but they are good games and you mentioned "good starting points" and honestly, Paradox games, even their more simplistic ones, tend to have way too many menus and options to go through and are complex enough that people make hours long series to act as tutorials that are recommended by fans to newcomers.
And maybe i just have a strange definition of a "good starting point" than people here, but i don't think a game that people feel like making various long videos to act as tutorials count as good games for newcomers to a genre, so i wouldn't recommend Crusader Kings 2 and other Paradox games, but that is just me.