I came across Doctor Mike, https://www.youtube.com/channel/UC0QHWhjbe5fGJEPz3sVb6nw, on YouTube not too long ago. I chose him as the Featured Vlogger of the Week this week. It looks like he has 147 videos and 3,723,935 subscribers (as of when I checked about an hour ago) which is impressive as he first uploaded a video in mid-April 2017; last video uploaded today. Some of the videos are reviews of various medical shows and where he thinks they got things right or wrong. He looks at the comments to see what shows or episodes people want reviewed.
Here’s his Instagram: https://www.instagram.com/doctor.mike/