I have the National Notary Association Certified Background Check, which is done through Lexis.  To date, not one company or attorney has asked me for it.

HOWEVER, a non-attorney signing agent or attorney on the NNA signingagent.com list (which is available to any company wishing to review it) who has the "certification" and/or "certified background check" will have a special seal next to her/his name indicating which certifications s/he has. Any title or scheduling company viewing that list wouldn't bother to ask, because they've already checked.

Personally, an attorney admitted to practice in her/his state jumps through more hoops, background checks, and carries much better malpractice insurance (including an insured closing protection letter from the title company s/he issues the policy through) than any non-attorney getting signatures and initials on documents.