I noticed episodes that seems to be edited lectures in both Mark Goodacre's NT Pod and Philip Harland's Religions of the Ancient Mediterranean. Both are academic studies of the Christian New Testament (though the later also spends a lot of time on the surrounding society), and I enjoyed both a lot (though they can be a bit information dense at times). If you give the Religions of the Ancient Mediterranean podcast a listen I'd recommend considering starting at series 2 and coming back to series 1 later, as starting with a deep dive into Paul's letters and their historical context can be a difficult place to start for some people.

Another podcast I've learned a lot from is the Ottoman History Podcast (not to be confused with The History of the Ottoman Empire podcast). It often has episodes where academic historians are interviewing other academic historians about their areas of research. So you'll have a whole episode where a historian talks about their research into mining communities in the late Ottoman Empire, for instance.

For something a bit lighter, the Tides of History podcast is worth a listen. It's an academic historian who takes a look at various historical events.