What is the train shown in the splash screen for this route and is it in the route? or do you need another DLC for it to show
If it's the in-game splash screen where you see the train coming out of the station and there are construction/railway workers next to the track, it's the DB BR 403 ICE 3 and is included in the route. You do not need another DLC for the train to show. Also, iirc, if you have some of the other German routes, you will get extra timetable regional services for those locos (Talent 2 etc).
I bought this route but only 2 trains in the list in timetable I have all the other German routes except Rapid Transit Should I see other trains in this?
Sadly with the release of this route they found on consoles they couldn’t have the layered services that allow you to see or drive the locomotives from other routes and that they would need to do some memory optimization work first and when they are done they will add all the extra services to the route that should be there. So yes at the moment all you will see available for this route are the 403 and 423