+1 for the Kinks, 1966-70
+1 for the Band, The Shape I’m In, add Daniel and the Magic Harp
Nilsson, Pandemonium Shadow Show (She Sang Hymns Out of Tune, 1941). Aerial Ballet (Good Old Desk, The Wailing of the Willow). Nilsson Schmilsson (everything, though Jump into the Fire may not be hidden)
Yoko Ono, Run, Run, Run from Feeling the Space, which along with Approximately Infinite Universe and Fly include several hidden gems.
Faces, Debris, Fly in the Ointment, Glad and Sorry
West Coast Pop Art Experimental Band, some disturbing themes and lyrics, but all three lps include genuine gems