Amongst many, forgotton....when very young - an easy version of black Beauty.
Later, Enid Blyton - yes, the Faraway Tree was number 1
I liked her character George in the gang.
Arthur Ransome top choice.
5 children and It, Edith Nesbit.
I could not get enough of The Chalet School series of story by Elinor M. Brent-Dyer, oh I longed to be one of the girls.
I couldn't help noticing that most books I liked was where children have adventures and parents absent in one way or another. Or the factual Ladybird books.
What Katy did, later.
I discovered Just William as an adult and delight in them.