Sensors based on power consumption of multiple devices used in parallel


I recently got the Shelly 3EM that is used to provide data on real time power consumption of my entire house.
I’m looking to find a way to leverage the device in order to create multiple sensors that reflect usage of specific devices. My base assumption is that many devices in my home (dishwasher, heater, ac, dryer etc) have a unique power consumption and that based of phase and usage pattern I should be able to know if the device turned on/off.

Did anyone already do something similar?