There is absolutely NO difference in '68-'72 doors used in F100 thru F600 trucks. There were a variety of different doorpanels used, however, depending on the year and trim level.
Some trucks only had steel panels, though some would have chrome perimeter trim. Others would have the steel panels with perimeter trim PLUS a panel insert, like this:
Some of the '71-'72 trucks had no steel panels, just a cardboard and vinyl panel that went all the way out to the edge of the mounting area, like this:
