Guyana has seen massive increase in oil discoveries over the past few years. Their output is at historic high [1].

Will resolve when Guyana is listed on the OPEC website [2] as a member state or 3 large 'credible' news outlets cite is as having happened.

1: https://oilnow.gy/featured/guyana-oil-production-hits-highest-recorded-output-in-september/

2: https://www.opec.org/opec_web/en/about_us/25.htm