Hi Nicole,
I'm not sure I understand your question. I am aware of VAs that subcontract their services to other VAs, and VAs who work with subcontractors. So yes, VAs fit both categories.
Linda gave some good advise regarding starting a relationship with VAs you admire, as many VAs now have team members (subcontracting relationships) with other VAs, and you can learn about the process, types of services most requested, etc.
Good luck.
Sharon