I appreciate your list. I would recommend for children ages eight to eleven, a limited edition book by Ethelyn M. Parkinson, GOOD OLD ARCHIBALD. It is not a classic but it should be. I read it from the church library when I was a boy and later ordered it as a used book and read it to my children. It was published in 1960 and features American kids growing up as uniquely American kids, playing baseball, taking pride in their dogs, having funerals for small animals, getting into mischief, learning to get along with eccentric adults, and having fun.
I have a thing for Victorian and Edwardian children's books. They do NOT "talk down" to kids, use really good grammar and vocabulary, and most actually teach something in a subliminal way.
Add to my list:
The Water Babies
The stories by Beatrix Potter
Betsy, Tacy, and Tib series ( for young girls )
And for teens:
1984
Brave New Worlds
WE
All of Jack Finney's books and collections of short stories.
Harlan Ellison's books
Roald Dahl's adult books ( mostly mystery short stories and many are quite lovely and creepy ); his children's books for younger ones.