The big break comes between the older focal plane shuttered models (S, S2, S2A, EC and EC-TL) which the Nikkor lenses were made for and the newer leaf shutter models (ETR, SQ and successors). Lenses for the focal plane models are not compatible with the leaf shutter models, which only take Zenzanon lenses with in-lens shutters. I expect lenses would be compatible amongst the focal plane variants, but don't know this for sure.