Considering those authors mentioned more than once in the Overall top 20 in each Year group, we find they aggregate as follows.
Jeff Kinney remains most popular author with an increased number of mentions (60). David Walliams is at number two, sustaining his 31 mentions from last year. Roderick Hunt is at number three, just one down at 24 mentions, but of course his books are all for young children.
Roald Dahl is at number four, although his mentions are down to 20 (from 23 last year). Julia Donaldson stays at number five, and her mentions now total 14 (one up from last year). Francesca Simon stays at number six, although her mentions have declined by one. At number 7 J. K. Rowling shows a re-emergence with three mentions, together with Martin Waddell who had three mentions last year.
Joint eighth on two mentions are John Boyne, Suzanne Collins, Judith Kerr, Jill Murphy, Michael Rosen, Dr. Seuss and Zoe Sugg – all as last year except for Zoe Sugg who has declined from four mentions.