Why is the Ghana Institution of engineers (Gh.IE) or the Ghana Institution of Surveyors (GIS) not among the above list?

These two sister Institutions within the construction / building industry are also professional because their membership is like a school with many disciplines within the ‘Institution’, These are Civil, Mechanical, electrical etc for the Engineers and similarly Quantity Surveyors, Land Surveyors, unlike the architectural profession, do not have a separate government sanctioned and legally backed Registration Councils like the ARC. The 2 Institutions in this regard also regulate their respective professional themselves (as the GIA did before) but at best have control over only their own members and not over members of the general public infringing on their professions.