I love movie trivia and puzzles, so I had to look into this. I think it's supposed to be The Birds, because I see Cathy Brenner's yellow cardigan and Melanie Daniels' gorgeous green coat. I'm assuming you resized the characters for the scatter graph?
My best guesses, from left to right: Hitch, himself; Charles McGraw as Sebastian Sholes (sans hat), Veronica Cartwright as Cathy Brenner, Malcolm Atterbury as Deputy Al Malone, Suzanne Pleshette as Annie Hayworth (with dress/coat colors switched), Tippi Hedren as Melanie Daniels, Rod Taylor as Mitch Brenner. The man in the hat is a bit of an anomaly. No one wears a brown suit with a hat like that in The Birds, but it looks exactly like the outfit Malcolm Atterbury wore in North by Northwest.
My resource is
https://the.hitchcock.zone/wiki/1000_Frames_of_The_Birds_(1963)