I put together a video of just 1919 World Series and 1920-21 trial footage if anyone is interested
https://www.youtube.com/watch?v=9iaGyUba6DY
Just Joe Jackson's Swing (spliced from 2 sources bc one was a longer shot than the other)
https://www.youtube.com/watch?v=z3sorDUSzss
There are three other videos with more footage from the 1919 series:
The Dawson Film Find had a few news reels with some new footage:
https://www.youtube.com/watch?v=0mPHqbJXDQI&t=12s
A high school in Indiana put together a video on Edd Roush that has footage of the 1919 Reds I have never seen else were and no clue where they got it from:
https://www.youtube.com/watch?v=OUXL9b-Wm6I&t=73s
Section of the Smithsonian's show America In Color: Organized Crime
https://www.youtube.com/watch?v=pZ5HoZK6ogc
(PS is you are curious about 6man football check out some of the state championship games I have on my channel as well)