You have configured track one as a folder track and the other three are in the track-one folder. You can drag the other 3 tracks out of the folder to the top level and they should start behaving as you would expect.
If the noise is induced in the pickups - eg from your monitor screen or fluorescent lighting, then no amount of electrical isolation will cure it.
The only cure is switching off the offending sources, or moving away from them.
A long-shot 3rd option is to get an old Line6 Variax, which doesn't use magnetic pickups at all & is therefore induced-voltage-...
You don't have a ground loop as there is no connection between the guitar and the computer chassis (other than via the interface).
You can try using a DI box - this might improve your situation but without having access to the setup it is hard to diagnose correctly.