3 re from left, what is under the tape? A hole for a grommet?

On the far right both 4 bolt covers neither one has the clips for the engine wiring, so I think you have 2 drivers side covers there.

2 on far left are 1967 440 HP all B&C bodies. Yes the drivers side has spark plug looms for the b-body even though the wire cannot run there. Seen many original cars with this cover on the drivers side. Mostly LA built cars, some ST. Louis built.