Well I guess we'll have our pledge titles for that purpose. Those who didn't pledge will have generic titles I guess. Something like?
Novice - Chainmailer - Postmaster - Archtyper - Lord Lyric - Master of Keys etc, hell I don't know lol.
here are some ranks apprentice ,Haggler, Bargainer Hawker ,Vendor, Entrepreneur, trader, Master Trader ,Merchant Merchant, Prince, Master of Commerce