Are you specifically asking for Bitcointalk Signature bounties?
It's seems he means all bounties.
I think it'll be helpful and there are so many guys need a spreadsheet like that

. Please let me know if anyone in here already created a spreadsheet with all bounty campaigns which accept negative trust member

No one needed that. As my thought, any account which has negative trust shouldn't be allowed to join in all bounties because they are all either cheater/scammer.