What is a recommended snapshot policy for production that does not need to include data indices?

Versions (relevant - OpenSearch/Dashboard/Server OS/Browser):

Describe the issue:

We as of now, don’t have any need to take snapshots of our data indices but were wondering if we could use the snapshot feature to restore critical system indices in case of emergency.

What indices do you recommend to take snapshot of that isn’t data indices?

All indices that starts with a dot perhaps(^.\w*$)?

It depends on which features you are using, call GET _cat/indices/.* to check all of the system indices, you may specify .* to include all system indices when taking snapshot.