There is no list and the only way to tell is to do your due diligence and look into business entity listings in the state they say they're based.  TALKING to them is also a dead give-away!

The banks don't care about who's doing the work.  They just want their work insured by a title company.  If a title company wants to outsource the work, there's nothing anyone can do about it.  If the banks really cared, they'd just put out a "no overseas outsourcing" rule.  they don't.  End of story and end of our jobs.  It's coming ... just a matter of time.