Some award season honors are bellwethers for Oscar acting nominations. Others provide hints of where the Academy’s Documentary and Animation branches may be leaning toward with their own individual categories. When it comes to Adapted Screenplay, the WGA Awards are your best bet, but the USC Scripter Awards has increasingly made a name for itself as an Oscar bellwether. That’s good news for the screenwriters of “One Night In Miami,” “Nomadland” and “Ma Rainey’s Black Bottom,” among others.