Currently http://download.zfsonlinux.org/epel/ only has releases for 8.x and 9.x.
With RHEL 10 being announced this past week and their big marketing push at Red Hat Summit that just took place this week, the uptake of RHEL 10 will be a continual upward climb.
Whenever you guys can get around to putting runners in place to build ZFS for the 10.x line would be great.