Dear Nathan, what a tremendous work you have done, and the video is very informative and I hope you will in due time put it official, and I would be glad to share it in the future, after some revisions. I do realize that choosing what references to mention is a difficult task, and it is clear that you have done your your share of reading. Although, I you ask for comments, here are mine (they grew quite lengthy...):
You mention/cite Charles Darwin's kid Erasmus, and it says 1801on the slide. Erasmus (b 1731 - d 1802, https://en.wikipedia.org/wiki/Erasmus_Darwin) was actually Charles (b 180