I have only occasionally had trouble with recruiter spam out of the blue myself. What I really wanted last time I had to deal with them was a list of recruiters

I have only occasionally had trouble with recruiter spam out of the blue myself. What I really wanted last time I had to deal with them was a list of recruiters with a track record of deceptive or unprofessional behaviour so I could avoid the time wasters. I suspect the list of recruiters I'd want to block for spamming and the list I'd want to avoid for being misleading or unprofessional would have a lot of overlap.