Here are 2 more quick charts for now. If there is interest, I may put more of this stuff in the thread later. Keep in mind, I did this census over about 8 months, so some of the cards, there will be more items that have been graded/sold since I started, I will get those when I update, which I am actually in the process of doing now. Directional scarcity is more important than the exact numbers, imo.
Here is the data I collected for the 12 Minor Leaguers, which I referenced in the first post.
Also, I picked out this subset of cards because I thought it was interesting. These cards have 6 backs total (except Street, which has 7, but I am not counting the blank back since its so rare and likely just a scrap)
Collins Mouth Closed has 5 of the same 6 backs as the rest, but he has no American Beauty back (that I saw), and instead has a Hassan 649, which none of the others have. Why? I have no idea. But it is interesting to me.