I guess the title says it all. I've been playing TSW2 since launch and haven't really expanded my library beyond East Coastway, Clinchfield, and the Dash 8. I'm looking to expand my collection especially with the announcements of Sherman Hill and Horseshoe Curve but I know only little about how layering works. For example, if I say purchase the Oakville Sub or the Peninsula Corridor will stock from those routes show up on CSX Heavy Haul's timetable scenarios even though they're in the Preservation Collection? Would CSX stock appear on Cane Creek? And yes I know Cane Creek will not cross over with Sherman Hill (at least for now). So basically is there some list out there that can tell me what route's stock will layer over another route's stock?
German stuff goes like that https://docs.google.com/spreadsheets/d/1W5-ueaP4-UmdhZMKpdH0yTADmY4gNyMw_dRNi86G57o/edit#gid=0
Uk routes don't really layer too much at the moment. Germany is where your layering fun happens more so as I believe the routes are more connected.