“our fake history” is a pretty good match to what you’re describing. It’s a relatively light hearted, rigorously researched, history podcast with a focus on misunderstood historical figures and events.
“The plastic plesiosaur podcast” is a really fun podcast more focused on cryptids and pop science.
One of the host to plastic plesiosaur has a YouTube channel called “trey the explainer” which is worth a watch.
And if you like low key, entertaining deep dives into machining or tech, check out “technology connections,” “this old Tony,” and “tech moan.”
I just dump a liter of bleach in the upper deck and remove the seat. Nothing cleans you up better than a good swirl.