And don’t make John Brown an irrational religious zealot or mentally insane either, which are the common depictions of him in media. He was religious, but it was not irrational religious zealotry that fueled him but a great Christlike love and compassion and understanding. If you read his life accounts he was greatly admired by the communities he was a part of and he also treated Native Americans very well.

I believe one time a white supremacist possy tried to round up some native Americans nearby and tried to recruit John and his sons, and he told them he would rather form a possy against the white supremacists and drove them off his territory

There was a show called The Good Lord Bird that seemed good but I've never watched it to confirm

Ethan Hawke starred as John Brown in Good Lord Bird pretty recently so I doubt Tarantino will make a John Brown flick. Also Tarantino has never actually made a historical film where the main characters are real historical figures. He has stuff like Inglourious Basterds where Hitler gets killed, but none of the main characters in that movie were real.

Brown wins harpers ferry, starts great southern BBQ a decade before Sherman.

yeah he's literally the greatest American to ever live