The Deprogram - three communists from three parts of the world yapping about a variety of topics tangentially or directly related to communism but with enough humor that it isn't so depressing. Sometimes have really interesting guests on the show.

Fall of Civilizations - narrative histories following the rise and fall of various cultures. Degree of depth varies.

Blowback - in depth examinations of US imperial policy through the medium of a extremely well produced narrative history. Each season focuses on the US relationship to a specific country during a specific timeframe. Can't recommend enough.

The Ancient World - A semi-chonological retelling of ancient history. It's arguable that West Asia is the focus but it delves into a lot of other regions as well.

The Magnus Archives - Eldritch horror/mystery audio drama following a skeptical archivist of public paranormal accounts slowly piecing together connections between the accounts and discovering his own relation to them. 10/10 listened to all 200 episodes of this about 3 times through.