Christian Friedel melts into his roles, most recently as the commandant of Auschwitz in Jonathan Glazer’s “The Zone of Interest.” The Dresden, Germany-based actor and musician fashioned Rudolf Höss as an executive on the rise: he’s a snappy dresser who’s efficient and knows how to get the most out of his employees and equipment —and how to suck up to his bosses. Except that he’s running a death camp and overseeing the murder of thousands of Jews and whoever else the Nazis didn’t like. He also oversees a large family run by his equally striving and efficient wife, Hedwig (played by Sandra Hüller, who’s having a great year — catch her in “Anatomy of a Fall”).