Update. Can't get the group trigger to fire, but On/Off state device triggers seem to work fine.
Very useful.
Still not sure why switches don't auto populate the dev list... further digging is required! The device state does update via Wifi or SW, so that's good. It 'sees' the switches. Just doesn't wanna let me play with them.
The main function is happening already though, so. Mild success. Thanks for the help, or at least the audience. Lol.