https://www.youtube.com/channel/UCZHmQk67mSJgfCCTn7xBfew
I discovered him on Two Minute Papers' similar channel list on the alternative YouTube recommendation algorithm I'm helping to develop. Here is Yannic's list of similar channels which includes a number of AI-research focused channels:
https://channelgalaxy.com/id%3DUCZHmQk67mSJgfCCTn7xBfew/