You inspired me to install my own Rocky Linux 9 VM. It all went pretty smoothly, except I think the first yum install in your list should be glibc.i686 (and not glibc++.i686).
As noted and expected, it runs the existing -el9 (CentOS 9) build, but the next step will be to actually build a new A-Shell in this environment. I'm not sure yet if we'll continue to refer to it as "-el9", as I'm not keen on adding yet another build variation that isn't really necessary. Probably this will become the new standard for the trio of not-quite identical triplets -- CentOS 9, Rocky Linux 9, Almalinux 9.