What would you call this vertical sequence of stops?
This is more specific than your question asks, but I would also consider that an itinerary UI. Useful for conveying times, locations, and travel information in a timeline fashion (as stated by Pectoralis).
I would call it a vertical timeline.
The "string of beads" is just googles way of showing the user that this is a distance he needs to walk instead of using public transportation etc.