I love the Julia Donaldson books, beautifully illustrated and I think they capture the imagination of younger children, they were great favourites of my grandchildren when they were very young.
I can't really comment on Dr Seuss because we didn't have any. I loved Shirley Hughes Alfie, Dogger and Lucy and Tom books when my children were young. Again beautifully illustrated, they still seem to be around in book shops.
My granddaughter seems to like David Walliams books and they certainly sell well. They come across as a weak version of many of the Roald Dahl books, which again my children liked at junior school age and which imo were much better than DWs.