Sense isn’t going to directly detect electronic devices, that all obscure any characteristic signatures they may have in operation via the power supply. But there are two ways to sort out the power flowing to wall-warts, etc.
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Watch your Always On and learn how it works. It should give you a good estimate of how much power your house is using when all the major devices are not in their active on modes.
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You can push down into the details in two ways.
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You can try unplugging or flipping breakers when your house is electrically very quiet (nothing going on or off) and watching the Power Meter, to see how much the unplug/breaker off drops the Power Meter. Do not watch the Always On bubble for information at this stage - it’s a long-term calculation. The Power Meter is the place to look for instantaneous changes.
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Invest in a 20$ HS110 smart plug and use it as a Tester for each device you want to look at. Configure it into Sense using the Kasa app, and the TP-Link integration. Plug the first device you want to assess into it, then observe that device’s (cable box ?) waveforms in Sense’s device Power Meter for however long it takes to figure out the device’s baseline usage. Then move onto the next. If you leave it plugged in for a week of so, Sense will usually come up with an Idle power and Always On for that device. If you want to do this for multiple devices, either move the Tester HS110 to another device or invest in more HS110s.
I have used smartplug data to profile hourly power usage of a number of electronic (and other) devices in my household. Sometimes the data isn’t as simple as On/Off/Standby.