In the Urban Arcana and Shadow Chasers campaign settings, the plane of shadow is simply known as Shadow.
The White Shadow | Robotech: The Shadow Chronicles | DJ Shadow | The Shadow | Shadow Cabinet | Snakes on a Plane | Batman: Shadow of the Bat | Moonlight Shadow | plane | Outlands (plane) | The Shadow Out of Time | Storm Shadow | Prime Material Plane | Jay Jay the Jet Plane | The Shadow Line | The Plane Train | Shadow Project | Shadow Leader of the House of Commons | Shadow Chancellor of the Exchequer | Next Plane Out | Inclined plane | William Plane Pycraft | The Shadow over Innsmouth | Shadow Theatre | Shadow Raiders | Shadow on the Wall | Shadow of the Thin Man | Shadow Home Secretary | Pandemonium Shadow Show | inclined plane |