I have a very new (WiFi connected) LG washer and dryer. Has to put washer on a Kasa smart-plug to catch usage. Pretty clear after seeing waveforms why it was difficult for Sense to identify - a hot mess of power transitions, with no simple on or off signature.
https://community.sense.com/t/lg-washing-machine/10563/2
Sense did find my dryer heating element, but not the tumbler.