that's an interesting list! i've been looking underneath cars too to see what i could revese engineer to suite my car.
i'm curently building some dams for my car... they will cover the inner 2/3 of the tire and the suspention link. they'll basically follow the wheelwell inner wall. it will be difficult to test them exacly but if i have them on i'll post some pictures.
edit:
here are some random examples i found on the web, i highlighted the actual flaps in red and some parts of the bumper that seem to work together with the flaps in green: (note most seem to guide the air to the middle of the car rather then outside)
also the mercedes and the ford have a separated design with wheel and suspention fairings unconnected and at different angles.
the mercedes has rear deflectors wich i could not see on the other cars
the civic in the first picture seems to be a more storty version and has bigger bulges (green) on the bumper, perhaps these generate some downforce rather than reduce drag.