This page has a lot of information on maintenance periods for the latest releases.
https://access.redhat.com/support/policy/updates/openstack/platform
If anyone has question on the differences in release support, ask here in this forum.
One of my last customers wanted nothing to do with long term releases. They wanted to stay on the cadence of the release schedule.
This is the trajectory I took when building clouds before I became a consultant.
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