Your best reference for these is APOLLO: The Lost and Forgotten Missions by David J. Shayler.
In summary:
Apollo 16: J-1 mission, March / April 1971 launch, no LRV, first SIM bay flight, demonstration of uprated CSM / LM / EVA capabilities. Landing at Descartes, orbital photography of Davy Rille (future landing site), 3 x 4.5 hrs EVAs. SA 511, CSM 112, LM 10.
Apollo 17: J-2 mission, July / August 1971 launch, first LRV flight. Marius Hills landing site, orbital photography of Copernicus (future landing site), 3 x EVAs. SA 512, CSM 113, LM 11.
Apollo 18: J-3 mission, February / March 1972 launch. Landing at Copernicus, further uprated ALSEP deployment, deployment of Questar telescope. 3 x EVAs. SA 513, CSM 114, LM 12.
Apollo 19: J-4 mission, July / August 1972 launch. Landing at Hadley Apennine, 3 x EVAs. SA 514, CSM 115, LM 13.
Apollo 20: J-5, launch December 1972. Landing at Tycho crater, deploy ALSEPs to complete ALSEP network. Retrieve portions of Surveyor 7. 3 x EVAs. SA 515, CSM 115A, LM 14.