Stake signature campaign spreadsheet is not available for the public to see.
It's available for the public.
And for those that (I honestly have no idea why) want to know about the campaign members,
here is the list.. but, as I said, no new members are shown in that list until they get their first payment.
I also want to confirm that this guy always use Stake signature because I see him posting around, not only wear it at this time. Anyway it's not forbidden or illegal when someone wear a signature where he's not a participant of the campaign.