The
https://github.com/openshift-kni/cnf-features-deploy/blob/master/ztp/tools/siteconfig-converter/hack/kustomize-generator.bash
tool does not generate sorted output.

For directory structure:

sno-extra-manifest
├── 01-container-mount-ns-and-kubelet-conf-master.yaml
├── 01-container-mount-ns-and-kubelet-conf-worker.yaml
├── 01-disk-encryption-pcr-rebind-master.yaml
├── 01-disk-encryption-pcr-rebind-worker.yaml
├── 03-sctp-machine-config-master.yaml
├── 03-sctp-machine-config-worker.yaml
├── 04-rh-internal-icsp.yaml
├── 06-kdump-master.yaml
├── 06-kdump-worker.yaml
├── 07-sriov-related-kernel-args-master.yaml
├── 07-sriov-related-kernel-args-worker.yaml
├── 08-set-rcu-normal-master.yaml
├── 08-set-rcu-normal-worker.yaml
├── 09-openshift-marketplace-ns.yaml
├── 99-crio-disable-wipe-master.yaml
├── 99-crio-disable-wipe-worker.yaml
├── 99-sync-time-once-master.yaml
├── 99-sync-time-once-worker.yaml
├── disk-encryption.yaml.tmpl
├── enable-crun-master.yaml
├── enable-crun-worker.yaml
└── image-registry-partition-mc.yaml.tmpl

Running the tool generates this (or a variation). The order seems to be based
on the order the files (inodes) were added to the directory, rather than
lexigraphically sorted

configMapGenerator:
- files:
  - sno-extra-manifest/enable-crun-master.yaml
  - sno-extra-manifest/08-set-rcu-normal-master.yaml
  - sno-extra-manifest/07-sriov-related-kernel-args-worker.yaml
  - sno-extra-manifest/99-crio-disable-wipe-worker.yaml
  - sno-extra-manifest/04-rh-internal-icsp.yaml
  - sno-extra-manifest/99-sync-time-once-master.yaml
  - sno-extra-manifest/06-kdump-worker.yaml
  - sno-extra-manifest/03-sctp-machine-config-worker.yaml
  - sno-extra-manifest/01-disk-encryption-pcr-rebind-master.yaml
  - sno-extra-manifest/01-container-mount-ns-and-kubelet-conf-master.yaml
  - sno-extra-manifest/99-crio-disable-wipe-master.yaml
  - sno-extra-manifest/99-sync-time-once-worker.yaml
  - sno-extra-manifest/07-sriov-related-kernel-args-master.yaml
  - sno-extra-manifest/enable-crun-worker.yaml
  - sno-extra-manifest/08-set-rcu-normal-worker.yaml
  - sno-extra-manifest/09-openshift-marketplace-ns.yaml
  - sno-extra-manifest/01-disk-encryption-pcr-rebind-worker.yaml
  - sno-extra-manifest/01-container-mount-ns-and-kubelet-conf-worker.yaml
  - sno-extra-manifest/06-kdump-master.yaml
  - sno-extra-manifest/03-sctp-machine-config-master.yaml
  name: extra-manifests-cm
  namespace: helix80
generatorOptions:
  disableNameSuffixHash: true


    

https://github.com/openshift-kni/cnf-features-deploy/blob/master/ztp/tools/siteconfig-converter/hack/kustomize-generator.bash in all releases that have this tool
    

Always
    

    1. Run the kustomize-generator.bash on an extra-manifests directory
    2. Compare results order to 'ls' order
    

Output is arbitrarily ordered

Output is sorted for deterministic results given the intended use of ##-foo.yaml
file naming convention to set the order.