So as an avid hardcore PC gamer (build my own rigs) for a very long time there are indeed Train simulators with accurate scenarios, routes, time tables, and high resolution graphics.
If anyone has any questions feel free to email me.
The one I'm playing on my PC now is below.
Train Sim World (PC, Xbox One, PS4)
This isn't me playing or my channel but gives a good indication of what this simulator looks like.
This one below has steamers, but is more of sandbox mode.
Train Simulator 2020 (PC ONLY)