Some car models in the Ford line up back in the 50s were all on one car!
Witness the Galaxie 500 on the Fairlane 500.
Later Falcon Futura, which lead to the Fairmont Futura.
F series trucks: Explorer was a tape and paint package for the spring in 70, 71, and 72. The Ranger was a mid level trim package that superceded the Custom Cab (Custom was also used from 54 on trucks, then cars as in Custom, Custom 300, Custom 500), and was extended upwards to the Ranger XLT, then the Ranger XLT Lariat, finally dropping the Ranger and just calling it base, custom, XL, XLT, Eddie Baur (for a couple years in the 90's) and back to the Lariat on pickups.
Edge, already mentioned.
Torino on the Fairlane, then became it's own model line.
Courier was a two door wagon in the 50's, and then in 72 was used on the Mazda supplied pickup.
Good thread already, real head scratcher!