I heard that Oscar contenders Belfast, Cyrano, The Power of the Dog, The Lost Daughter, Mass, Spider-Man No Way Home, and pretty much all of the foreign language screenplays are ineligible. On the flip side, I hear that CODA, Don’t Look Up, King Richard, Dune, Licorice Pizza, Tick, Tick…Boom!, West Side Story, Nightmare Alley, The Tragedy of Macbeth, The Last Duel, House of Gucci, The Eyes of Tammy Faye, Green Knight, Last Night in Soho, The French Dispatch, and Being the Ricardos are eligible.
Did I miss any? I am not sure about C’Mon C’Mon, Free Guy, and Cruella.
Apparently The Harder They Fall is considered adapted, not original.