OpenAI's chief research officer and the research VP have left following CTO Mira Murati's exit

How much of a skeleton of OpenAI is left? What a shake up is going on at OpenAI?

E.g. Barret Zoph is a highly cited ML & AI researcher. See his Google Scholar profile. Some of his research papers are well known.

"OpenAI’s chief research officer, Bob McGrew, and a research VP, Barret Zoph, left the company on Wednesday, hours after OpenAI CTO Mira Murati announced she would be departing. ..."

OpenAI's chief research officer has left following CTO Mira Murati's exit | TechCrunch

Barret Zoph