Those over wing exits
Just got off a 737-700. I was seated in the exit row per SOP.
No mention in the brief of when to open the exit, just there would be no crew there.
Over the door, which opens up and out on a hinge, there were pictures of checking for fire etc. Looking at the door, I'd say a a substantial number of passengers would never be able to use it in an efficient manner. They have to step up and then fit through. Not happening for some of the larger or more elderly passengers.