A few not yet mentioned;
Point Blank (1967) Lee Marvin comes out of Alcatraz hellbent on revenge. Greatest ever hard man screen performance imho, just relentless
The Pawnbroker (1964) - Sidney Lumet’s debut, a Quincy Jones Harlem free jazz soundtrack & Rod Steiger playing a Holocaust survivor slowly losing his mind and being overtaken by the chaos of 60s Manhattan while being haunted by the ghosts of his past - powerful stuff. Morgan Freeman’s film debut too
Blue Collar (1978) Richard Pryor, Harvey Keitel & Yaphet Kotto play 3 Detroit auto assembly line workers struggling to make ends meet when they get caught in a union conspiracy
Also, the original Taking of Pelham 123 (1974) is an absolutely brilliant film. Walter Matthau & Robert Shaw are terrific in it. Such a well paced thriller of a type you don’t really see anymore
Finally, and totally different, if you want an old style British adventure film then Connery & Caine in The Man who would be King (1975) is a classic Sunday Afternoon watch