Red Hat has/had Red Hat Virtualization but has transitioned that to Red Hat OpenShift Virtualization as a successor. I think RHV is set to phase out in 2026, and I'm not sure if they're currently selling new subs or just servicing existing customers with other folks pointed to RHOV.

The oVirt community's most recent release is from last December, so I'm not sure whether that project is going to thrive now that Red Hat has largely stepped away. (Last blog update is also December 2022.)