Since Rocky 8 is based on RHEL8, and since it’s been fixed in RHEL8 as shown here: https://access.redhat.com/errata/RHSA-2020:4751 then it’s fixed in Rocky 8 as well - since the package versions are identical. Therefore any of the RHEL resources for errata can confirm for the entire CVE list that you posted on whether they have been fixed or not - feel free to check/verify that.
As for the errata not being as up-to-date as you would like, see various posts on the forum, for example:
which explains why since the team are busy with a lot of things, including their day jobs and families. Feel free to volunteer if you would like to help out in that area.
Some additional links relating to errata can be found here: Rocky Linux Errata - Rocky Linux Wiki