“A commit graph and nothing else” is approximately equivalent to empty as far as I am concerned. If I clicked such a link on a resume, I’d say “wtf am I supposed to be looking at here?” If your repos are private, just tell me they’re private.

It is well known that many engineers can’t share their work. It isn’t a requirement. But if you do share your GitHub, make sure it adds value to your resume and doesn’t detract from it.