Sorry, I tried a new way of posting and it did not post as I thought I had it arranged. The bottom line is that John Dalton had Mendeleev beat by almost 60 years withe his table of elements. It was very primitive but useful. Dalton is regarded as the father of “modern” atomic theory and did his work in the first decade of the nineteenth century.
The posting went fine, and thanks for doing it. Dalton probably should have a place in this list as well. I might quibble at the usefulness of his table compared to Mendeleev’s inasmuch as the latter’s is still in use pretty much as the author had designed it, but the facts are clear.