You can add Dr. Peter McCullough to that list. Youtube removed his video [1] which contained a few slides from one of the most highly cited and extensively authored peer-reviewed publications on treating COVID-19 patients with existing medicines.

The video has since been reinstated, only after the issue was escalated all the way up to the state attorney general.

[1] https://www.youtube.com/watch?v=cxmhvZ6eEI4