Watched this recently:
https://www.netflix.com/title/80185801
Studied Socrates in college. Although I watched this thinking it would be a good review of him (and it did have some good insight into how his methods were not well received in the changing political climate he lived in), I found the episodes on "The Buddha" especially interesting. If you can get past the series presenter's ever present presence, this series is a quick and accessible review of these three trains of thought.