On every order that has been commissioned, Velocity attaches Metafields to that order in the Shopify Admin.
Within Shopify's Analytics, you are able to pull more metafields from the order than displayed above. These include...
Placed By Rep: Email
Placed By Rep: Identifier
Placed by Rep: Name
Commission
Each of these can be found in the Dimensions section in Shopify's freeform report builder.