4.18-rhel8.7.series 4.18.0-425.10.1.el8 (RHEL 8.7)
4.18-rhel8.8.series 4.18.0-477.15.1.el8 (RHEL 8.8)
5.14-rhel9.1.series 5.14.0-162.23.1.el9 (RHEL 9.1)
-5.14-rhel9.2.series 5.14.0-284.18.1.el9 (RHEL 9.2)
+5.14-rhel9.2.series 5.14.0-284.25.1.el9 (RHEL 9.2)
See lustre/ChangeLog for supported client kernel versions.