Might want to try BBC's ‘In Our Time’.

Or ‘The History of English’.

‘ArtHoles’ for biographies of some famous artists.

I also enjoyed John Siracusa's musings and rants about tech on ‘Hypercritical’ — listened through it quite recently, despite it being a decade old. There was one episode where Siracusa went into a diatribe about filesystems and particularly HFS+ for two hours: what some modern filesystems can do and how HFS+ does none of that. It was great. Siracusa is now in the ‘Accidental Tech Podcast’, but it's more of a conversation deal.