I have been watching a set of cab ride videos from Germany and this poster/driver either uses the BR 261 road switcher or BR 264 road diesel. These units are operating on fully electrified lines so would fit into the routes we have. This would give us another option on motive power that could be used for just about any freight on the route.
How about a Deutsche Reichsbahn DDR DR Baureihe 118 Shunter DR BR106 105 DR V60 (East German equivalent to RSN DB BR363) & Romanian Made DR Baureihe 119 U-Boat for DRA & DCZ retro pack. In the GDR era Chemnitz is Karl Marx Stadt Tharandter Rampe