The Council produces one document for 2019, "Equality Outcomes Progress Report 2019" -- it does not provide a general mainstreaming update, just updates on the EOs.
EI not provided in the EO update, but is in a separate publication, on a separate page on the website. Latest information is Employee Equality Monitoring Statistics 2018 (1 Jan - 31 Dec 2018).
GPG/OS - some reference in the EO Progress Report, but Council also publishes more detailed GPG and OS data in a separate publication, on a separate page of the website ("Equal Pay Audit 2019"). Separate document also has PG and OS for ethnicity and disability.