Best movies on amazon prime that are oscar winners or nominees in writing (screenplay written directly for the screen--based on factual material or on story material not previously published or produced) category

The Front(1976)

Actors : Zero Mostel, Woody Allen, Herschel Bernardi, Michael Murphy,
Directors : Martin Ritt,

In 1953, a cashier poses as a writer for blacklisted talents to submit their work through, but the injustice around him pushes him to take a stand.