Bright Insight is a good general researcher and presenter of new ideas, but he doesn't come up with any of the theories himself.
These guys might be more your speed, They get into the real nitty-gritty Science sauce. Both playlists dive super deep into black-belt level science theories;
https://www.youtube.com/watch?v=wvjJqIXYT1w&list=PLHSoxioQtwZfY2ISsNBzJ-aOZ3APVS8br
https://www.youtube.com/watch?v=FQoMHt4UZZY&list=PLYRAmtDzQomgyo8ht4F6VuJWNpge5OP-M