You sure you didn't mistakenly send that to Stan Lee? lol
I believe this is authentic Ryan. It looks very similar to one I got in person a few weeks ago: 6B387067-51E2-41D4-AFDE-498E9492ED59.jpeg
I also like Ryan’s, unfortunately I’m not so confident about Joseph’s
I have heard that sometimes you get a secretarial TTM with Shaq.
That’s true I think he’s family members sometimes sign for him,
I met Shaq on a Florida highway many years ago right after he went from Orlando to LA and the signature I got in person is almost identical to Ryan’s. The only difference being in the “3” but depending on how, where, and at what speed he signed it seems like a common difference.