Identifying a connector for an AR headset
Got the answer from someone on Reddit.

Looks exactly like the DD2-series connector, made by JAE Electronics.


DD2 series brochure - http://jae-connector.com/en/pdf/MB-0112-3E_DD2.pdf
Plug - https://www.digikey.com/product-detail/en/jae-electronics/DD2B040HA2R500/670-1023-1-ND/1283593
Receptacle - /product-detail/en/jae-electronics/DD2R040HP2R1000/670-1025-1-ND/1283594