The Thread Viewer shows information about specific threads in your application, when applicable, arranged in rows by Address. The threads are listed in the order that they were started, and their state is only updated when the debugger is stopped. While the device is running, the view is frozen and any state in the table is stale until execution is stopped again.
You can hover over the items in the State or User Options column to reveal a tooltip that describes the indicated binary value.
Note that information about threads is only provided by the Zephyr Kernel when debugging options are enabled. See the debugging documentation for details.