Jacob Bekenstein
Introduced the idea that black holes have entropy proportional to their horizon area (Bekenstein entropy) and anticipated the thermodynamic interpretation that Hawking later confirmed.
Videos Mentioning Jacob Bekenstein

Black Holes. Explained. For 1.5 Hours.
PBS Space Time
Introduced the idea that black holes have entropy proportional to their horizon area (Bekenstein entropy) and anticipated the thermodynamic interpretation that Hawking later confirmed.

Avi Loeb: Aliens, Black Holes, and the Mystery of the Oumuamua | Lex Fridman Podcast #154
Lex Fridman
Physicist who anticipated some aspects of Hawking radiation, specifically that black holes have a temperature.

Cumrun Vafa: String Theory | Lex Fridman Podcast #204
Lex Fridman
Predicted that black holes have entropy proportional to their area, inspiring Hawking's work.

Andrew Strominger: Black Holes, Quantum Gravity, and Theoretical Physics | Lex Fridman Podcast #359
Lex Fridman
Physicist who proposed that black holes have entropy proportional to their surface area, a key insight that laid the groundwork for the black hole information paradox.