Not sure if it's already been mentioned but Hardcore History with Dan Carlin is pretty good, although most of his stuff is paywalled. I've been listening through the Supernova In The East series which focuses on Japan's history and involvement in the World Wars. I find war history morbidly fascinating and it gives perspective for how good we've got it in the present day, especially Australia
(although it could be a lot better too!!).
(although it could be a lot better too!!).