The Las Vegas situation would benefit if it was set up like the Deutsche Bahn (and some other sites) in which you can search by a generic city name or for service at a specific location.
Flix does that in a slightly different way, for their three different Las Vegas stops plus Henderson service. They're all listed together in chron order.
The Amtrak booking page now separates stations from destinations when you start typing. It used to be a mess, often fooling you into thinking there was no train if you picked a destination instead of a station. Or that's how I recall it. On the phone app, it only shows stations.
Hey niemi24s, if you want more info on that green Thruway line connecting CVS and RVR/RVM, it only runs on Cardinal days. It's been running since the 1980s, and is now timed for NPN in one direction and NFK in the other as far as I can tell. (It started way before NFK re-opened, and NFK and NPN have their own Thruways, for some trains, along with VAB.) The CVS-Richmond Thruway also connects to the Meteor section to the south, both ways, but with a 4+ hour layover. Using Staunton or a station further west is the best way to try to understand it, if someone would ever want to do that. Or ask the ticket clerk.
I don't know if anyone's written a history of the Amtrak Thruway specifically, but in the inaugural 1971 schedule at the Museum of Railway Timetables I saw only one "motor coach" in the whole system, connecting Newport News to Hampton, Norfolk and Portsmouth. Wikipedia says January 1973 was the first Thruway (first to use the name?). It ran between the Laredos, Texas and Tamaulipas, Mexico. By 1978 the system timetable is full of buses, Thruway, as well as Greyhound, etc. And car rental deals. In Florida, all you pay for is gas and taxes, for a week of "Airail." Before that you got a discount for a month in an AMC Hornet, Pacer, Matador or Station Wagon. Garth and Wayne would approve the Pacer. No telling why it was called Airail, except "airline" is old railway lingo for a fast train. Rail/air partnerships in Germany and Austria now use the name.
One thing about Amtrak in the 1970s, it had modern brochures and advertising. And then from 2011 to 2019 it ran a very good
history site and blog. Many of the materials can be found by searching, even things that don't appear in blog articles, apparently, like the Florida brochures.