I’m going to add one more thought to the mix here. Sense mostly relies on spotting characteristic (basic physics) responses to devices turning on and off - that is devices where the intrinsic physics of the underlying device is directly exposed to the house grid when the device is switched on (and off). Many electronic devices from that contain variable/DC motors or AC->DC power supplies, hide their physics behind active electronics (things with transistors, feedback, etc.) which makes them much harder to identify.