blinry on Nostr: Is there a name for this type of diagram that helps you pick the best subway car, ...

Is there a name for this type of diagram that helps you pick the best subway car, depending on where you want to get off?

And have you ever seen some outside of Tokyo?

Because I want more of those, and I'm thinking about whether it's possible go generate them from existing data… OSM might help, but the staircases might often be missing, I guess?