These are the videos I know of. If anyone has videos from people like IGN, Forbes, Kotaku etc with the developers, can you link them below. Not looking for Streamer commentary, but rather the videos of the Developers own words.
Media Event 2019
Vanion:
Ion Hazzikostas & Calia Schie
Quissy:
Ion Hazzikostas & Calia Schie
StaySafeTV:
Brian Birmingham and Patrick Dawson
SA Gamer:
Brian Birmingham and Patrick Dawson
TipsOut:
John Hight and Omar Gonzalez
Blizzcon 2018
Brian Birmingham and John Hight (Before Classic)
Blizzcon Presentation
Q&A Session