My railroad is called the "Liberty Belt Railway" with the tagline "Serving Ohio Industry". When I built layout 1.0 I lived on a road called Liberty, and my layout was a circle, so a belt railway seemed to fit. Other roadnames seen on my layout are Nickel Plate Road and Pennsylvania (which both served my hometown). The Liberty Belt would plausibly serve as a belt line to transfer freight traffic, and of course Ohio industry.
When I first got back into the hobby, and started reading up about building a layout, I read a couple books and articles that discussed what your layout's purpose is, and why it exists, and that stuck with me. So I kind of played that out to create an avenue of bringing it all together.