Anyone seen this free-hand Hopi craft hallmark & the artist it might belong to?

So Jason are the ones in the middle that are machine made, do they have a slightly sloppier appearance than the other machined ones on the left (While still being absolutely beautiful :heart_eyes:) partly because they are a thinner gauge material? I would also like to ask if you know who made the handmade ones and if thereā€™s any evidence in your opinion to tell one pearl maker from the next when you can tell they are in fact handmadeā€¦it might help with cases where we donā€™t have a lot of other clues as to who the maker is for the rest of the piece. Thanks

Wow, I was wrong. I thought the middle ones.