When a device is discovered automatically, it is displayed in the Resource Tree as either "model" or "manufacturer + model". As a result, all cameras with the same make and model will have the same name. Only the IP address will differ, and display of the IP address optional (see "Show additional info in tree").
A device can be renamed for easier identification or any other reason, from the Resource Tree using the device context menu option Rename (shortcut F2), or from Camera Settings -> General using the Name field.