I just did a quick scan through all of the images in this thread and didn't see another WaJo portrait (though I may have missed it).

We do have that Johnson Bryan but the scratch on the one you posted is a
little darker so it shows up better.

There are three different Johnson scratches so far.

I never thought I would say this in response to a bunch of pics of Johnson scratches, but: awesome!

I believe I have one of these. It's listed on eBay right now. Ends in less than 12 hrs. Would be cool if it actually is for the winner

I was at a show yesterday and saw a F. Smith with a scatch on the back. Didn't pick it up, so no scan.

Jason, Do you remember if it was one of these two scratches?

A different Young card with the same scratch has already been posted, not sure about Schaefer.

Pretty sure it was Smith 1.

Thanks Jason.

Bryan- I don't know if the Schaefer has been posted here, we do have a
couple of examples with that scratch but it's always good to have new ones
posted. (So far that's the only scratch on Schaefer).

Upside down White & Doyle
 

I can confirm that upside down White & Doyle have matching backs. It might not be super clear in the scans but I have both in hand and they match. This means that these two cards are in opposite positions, equal rows and columns from the center, sides, top/bottom, horizontal axis, etc. If we can link either of these two to a center/side/each-other via scratch we could make a lot of progress quickly. I look forward to seeing any scratches, neighbors, two-namers, etc that you have. Another piece in the sheet-size puzzle...