Xero Import Ignore Non Customer/Supplier Contacts
When doing the initial Customer import from Xero, All Xero Contacts are imported. It would be cleaner to be able to ignore the Xero Contacts that are neither a Customer or Supplier, See Xero help article below for details regarding the differences. Note that it also mentions Xero Contacts can't be manually classified as one or the other leaving the clean up to be done one by one in SR.
Darren Chapman commented
Xero exposes the fields to allow this filtering to take place: