I don't think I ever played pure business sims. But there is a business component in Transport Tycoon, which I loved. The last sim game I spent a lot of time in, is Factorio, dangerously addictive game I must say. My first love with world building games was Bluebyte's original "Siedler" game. I did build a world sim myself once, but many of my games are vehicle simulations (planes, cranes, tanks.)