Which research affiliate subtype should I use to assign a Research Affiliate?

There are four Research Affiliate subtypes:

Research Affiliate - Sr Research Fellow (A012): Senior Research Fellows have established research careers at other institutions, to which they plan to return after brief collaboration at The University of Texas at Austin. They are self-funded or independently funded by a third-party source such as a grant or other institution. Senior Research Fellows are typically recruited by a member of the university's faculty or research body to further university research endeavors. Senior Research Fellows may request co-Principal Investigator status from the Office of Sponsored Projects.

Research Affiliate - Research Fellow (A011): Research Fellows have at least three years of research experience (post-Ph.D.) and plan to return to their home institutions after brief collaborations at The University of Texas at Austin. They are self-funded or independently funded by a third-party source such as a grant or other institution. Research Fellows are typically recruited by a member of the university faculty or research body to further university research endeavors. Research Fellows may request co-Principal Investigator status from the Office of Sponsored Projects.

Research Affiliate - Postdoctoral (A010): Postdoctoral Research Affiliates are recent Ph.D. graduates (within three years) who are self-funded or independently funded by a third-party source such as a grant or other institution. Postdoctoral Fellows are typically recruited by a member of the university's faculty or research body to further university research endeavors.

Visiting Researcher/Scholar (A006):  Visiting Researchers/Scholars are visitors from corporations or academic institutions who are self-funded or independently funded by a third-party source such as a grant or other institution. Visitors typically initiate request for nomination and collaborate on research that may benefit their own research endeavors in addition to furthering The University of Texas at Austin's mission.