Daily Garrison Visitors - List them here.
I don't know if this will be helpful at all, but we can try. Post the toon name, what NPC you have, and the date. People can then find you in game if they need the trader.
Not sure if enough read the forums daily, but this might help us all get what we want.
Friday 27 Feb - Avisuku has an ore trader. Sells Primal spirits for Ore (5 True iron or Blackrock). Also sells the Blacksmithing and Engineering 670 to 680 recipes.
I should be in game this evening if you need the above.