Triton Digital publishes its U.S. Podcast Ranker for January (Jan. 1 – 28) based on weekly average downloads from participating networks and NPR’s “NPR News Now” maintains its #1 ranking, while NBCUniversal News Group’s “Dateline NBC” drops two spots to #4 and audiochuck’s “Crime Junkie” rises to #2 and NPR’s “Up First” climbs to #3.…