I know there are plenty of ST compatible smart plugs.
I know that plenty of those plugs monitor watts used in real time.
What I seek is one of those that can fit behind furniture. So that I plug it in to the outlet, and the outlet(s) it provides are at a right angle to its own plug.
Did you see any of the Jasco/GE ones? They’re pretty flat, and the plugs are on the side. Look for the plug-in ones, especially the Zigbee that do energy: