Some unmentioned as yet scores:

The scores by John Barry for Walkabout and by Georges Delerue for Le Mepris are not only musically similar, but are also used as a recurring device in each film. Hypnotic.

One score which keeps coming back to me is Walter Schumann's for The Night of the Hunter. The way the Robert Mitchum theme of menacing, disjunct bare fifths is juxtaposed with the Shelly Winters theme as he is about to kill her is one of the most brilliant musical moments in all film.