The TSW2 routes are not part of the early access, these will be available from the 6th onwards. (The exception being PlayStation where it will take longer - there’s an announcement thread covering this)
Hi richardwwoodward, I can confirm what GuitarMan just said. Legacy add-ons will not be available until the official launch date on the 6th September 2022.
If your still not showing any Addons on ps5, press options on the icon and manage game contents. I had to do this and it showed all the dlc not installed. Install from there
Not the complete truth hear as all your routes won’t be available on the 6th and might have to wait up to a month before all are available.
More information is available here: https://live.dovetailgames.com/live/train-sim-world/articles/article/tsw3-what-you-need-to-know