A few more that fit OP request.
L'amant AKA
The Lover (1992) directed by Jean-Jacques Annaud, novel by Marguerite Duras. Probably the best film of the bunch because of the quality production and period location of French Indochina. I watched half of it years ago before I knew anything about Duras. I'm interested to revisit because I think her films can be too wordy.
Maid in Sweden (1971) with Christina Lindberg. Amazing tits, mediocre film.
Bilitis (1977 ) David Hamilton's most well-known film. I'm surprised it's not on the infamous chart? You could add A Summer in St. Tropez too. That one is essentially a dreamy music video with no plot (only available in shitty VHS quality).
Twinky (1970) directed by Richard Donner, with Charles Bronson and Susan George. I only know this one from the extremely catchy theme tune -
https://www.youtube.com/watch?v=i7jRgV9lP-o Reminds me when you date a younger girl you have to put up with her juvenile bullshit.
Le farò da padre (1974) with Theresa Ann Savoy. No english subtitles. I haven't seen it but noticed it while browsing Italian exploitation films and remembered this thread.