1967 Albums that I would put ahead of Sgt. P include: Are You Experienced?; the Velvet Underground and Nico; the Doors (which has aged at least as good as Sgt. P). Prior to ‘67 there was also “Aftermath” and “Hwy 61 Revisited” just to name a couple of albums.
None of those are concept albums though and that is what we are comparing.
Concept albums.