Although this list has not changed much, it’s worth mentioning this link that seem to be more “official”:
NAFTA Professionals List or
https://www.nafta-sec-alena.org/Default.aspx?tabid=97&ctl=SectionView&mid=1588&sid=8fd98e3e-4495-43a8-ba47-4a6955d6b5db&language=en-US#Ap1603.D.1