BBC In Our Time -- such a broad range of topics, highly recommend for a browse. ~45 minutes, usually a conversation with three or so experts in a given field, hard to get depth but excellent surveys of topics that you might not have encountered.

Fall of Civilizations -- 2-4 hour histories of various societies.

History of Napoleon -- I like to have a long-form on the go, this is my current one. Adds a lot of context to modern Europe. Previously History of Rome.