I am using an Aeon HEM v1 to monitor my washer and dryer independently. I was able to move this from ST to Hubitat over the weekend. I am using an old Driver originally written by Mike Maxwell. I like the simplicity of the design, as it simply creates Button Pushed events when the wattage drops below a user configured wattage value (one for washer, another for dryer.)
You can then easily use whatever notification method you want, that can be triggered by a button event. I am using Rule Machine to send messages to our phones when either machine finishes a laundry cycle.
(Note: To get around the current 10 SMS text messages / day limit, I am using Pushover to send these messages to our phones/tablets. If anyone is interested, let me know and I will share my Pushover Device Driver.)