When looking at these indexes, you can get a rough idea how far back the name occurs by the symbol next to the name. a single "person" icon is either Dave or I. A double "person" icon is by our parents, and a triple "person" icon is by our grandparents.Then, the 1 is for 1st great grandparent, 2 for 2nd great grandparent, and so on through 10th great grandparents.
A "head" icon indicates a picture is attached on the person's page.
On Dave's side, I haven't finished the designations yet, but almost all through 6th great are done.