My iOS device not appearing in xcode device list, showing in organizer

See the image below and change the settings.

You might need to "trust" the computer - a device will not show up in the organizer if the computer is not trusted.

Restart the iPad while it is connected to the computer. When it restarts, it will ask if you want to "Trust" the computer or not. Do so, then the device will show up in the Xcode Organizer.