Debug packages is still missing in the AlmaLinux repos and no response to this thread so I guess I am the only once that actually find it is odd they are missing. Maybe it is possible to pull these packages from the Rocky Linux repo for a AlmaLinux build and hope for the best…
Does this show the packages that you are looking for?
dnf --disablerepo=* --enablerepo=baseos-debug list available
dnf repolist all does show some *-debug repositories.
The dnf repoinfo baseos-debug shows that mirrorlist comes from https://mirrors.almalinux.org/mirrorlist/9/baseos-debug
and there seems to be only one “mirror”: http://repo.almalinux.org/vault/9.3/BaseOS/debug/$basearch/