I personally always liked OTTD (open transport tycoon deluxe) for that matter. It's not really like settlers 2 but for me it always felt like settlers, since you had to manage a road system.
Also Northgard since it had sectors which felt like military buildings, so thats one thing for me that has been pretty settlers 2 alike.
Valhalla Hills is another take, since it had road systems to connect buildings.
I think I'm forgetting a game, but I can't point my finger on it yet.