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This year’s Oscar nominations for Best Picture are a wildly varied lot, ranging from heavy dramas (“Oppenheimer,” “Killers of the Flower Moon”) to nostalgic heartstring-tuggers (“The Holdovers,” “Past Lives”) to WTF? eye candy (“Barbie,” “Poor Things”). It’s going to be a tough call at the 96th Academy Awards. If you haven’t seen all, or any, of the films nominated for Best Picture…