Having found this thread, I gotta resurrect it. ORD-SFO this evening currently has 133 on the list. Not quite a record on this thread, but there's still a few hours until check in closes.
More impressively, I'm #23. As a 1K on an E fare with an RPU applied. So everybody ahead of me is GS or Y/B/M. Apparently there's a pharma conference in SF...
You also have IRROPS at SFO today so likely some displaced pax on that list.