Answer
Build a Quick Report against the permission-set-available-pages view, using a helper Permission Set that contains just the specific projections you want to "ring-fence" as the input filter, and exclude broad catch-all roles (like a full-access or read-only-support role) from the result set so the report only surfaces the permission sets meaningfully relevant to an audit — this gives a single bulk listing of projection-to-permission-set grants across as many projections as you include in the helper permission set, rather than checking them one at a time.