From what I can see in the pictures, they're all post 8/17/65 pedals. Earlier pedals had no provision for a brake light switch, as it was mounted on the master cylinder.
First one has no pedal return stop, other two have different versions. Fast and furious production, and different vendors I believe are the reasons. Only difference I have noticed between automatic and manual 65 pedals is the width of the foot pad plate. Others may have more info.