So as an avid spaceflight geek, I was pleased to see that though people are complaining a bit about the Legendary event locos, some of the other event locos are very realistically representative of their fictional space agencies.
The ACA SW1500 looks an awful lot like this:
The NASA Railroad SW1500, used to pull stuff from the nearest railyard over to vehicle assembly. This is how space shuttle booster segments got to where they were assembled together into the boosters. I believe they will be using it again for the SLS/Artemis missions.
The Vostok TEM2 is this:
Used for goodness knows how many years to roll out Soyuz rockets for launch.