Every gateway MESH knows about. Health comes from the device itself, once a minute. A gateway that has said nothing for five minutes is shown as stale rather than online, because a device that dies without disconnecting leaves its last status behind and reporting that as online is the fleet view lying exactly when it matters.
Waiting to be claimed. These gateways are powered and asking every few seconds whether anybody has taken them. The code is readable only from the device's own setup page, which is what makes typing it proof of being in the building.
Every account and what it holds. No credentials are here and none can be: the console has no route that returns one.
Installers asking to join. Approving issues a code that creates an account and grants no building — they choose their own password, and nothing secret travels. The code is shown once, here.