Cities in Motion 1 is exclusively focused on public transport company management, CiM 2 allows construction of roads/buildings in a more expansive manner (it was clearly a prototype for Cities Skylines), but is still missing much of the gameplay you would expect from a city-builder.

I really liked CiM 1 because it wasn't made in unity and the euro focus (Vienna, Helsinki, Berlin, but there is also DLC for New York and Tokyo).

CiM is also very hard and I would argue the data vizualization expansion mod is a must for QoL.