I can't find any source for that "most lent authors"claim. Further, considering the criteria for "creative professionals": 
 *Regarded as an important figure or widely cited - doesn't apply 
 *Originating a significant new concept, theory or technique - doesn't apply 
 *created...a significant or well-known work...which has been the subject of an independent book or feature-length film, or multiple independent periodical articles - I can see no sign of this being the case 
 *their work has become a) a significant monument b) been a substantial part of a significant exhibition c) has won significant critical attention d) is represented within the permanent collections of several notable galleris of museums, or had works in many significant libraries - ditto 
 So it seems to me that Follet meets none of the relevant criteria.