Thank you for these resources. History documentaries:

- Montemayor: https://www.youtube.com/channel/UCX7katl3DVmch4D7LSvqbVQ

- The Operations Room: https://www.youtube.com/channel/UCnZJt7yQw5IztVwe-Dscd-Q

They take the time to make quality videos (even if it takes week or even months) as opposed to others that rapid fire publish videos.

Some channels I'd previously recommend had quality drop. Rather than investing in a topic they got a spammy feel to them.