I'm not providing a direct answer to your question, however I'd like to comment on the question itself.
Because we are talking about either art and craftsmanship finding objective measures or what is the BEST is pretty difficult. I think it's largely a matter of opinion. None the less there are some measures you might try to employ, if you are trying to follow in someones footsteps.
Published: One area might be if a scroll saw artist is so good and well known that a publisher foots the costs for a book.
Juried Exhibitions: Folks at the sharp end of the arts & crafts apply for entry into national art exhibits. There's one at the Smithsonian Institute in DC, the Cherry Creek Art Festival in Denver and so on. Regardless of the medium (fiber, wood, photographic paper, metal etc. entrants works are examined by professional (weavers, woodworkers, photographers, metal workers) and graded and only the best are included.
Seminars: Each year there are regional woodworking shows. Often there are seminars/presentations and those who are asked to do a presentation on scrolling or in-lay or pattern design or whatever are in the top group.
Originality: When I make a scroll saw project from Steve Good or Sheila Landry pattern I may be (or not) a fine craftsman (because I can run a saw) but I'm no artist. Art is original and I've never done anything with a scroll saw that could qualify as original.
Good luck with your search.