In no particular order, some of mine are:
The Little Prince
The Velveteen Rabbit
Horton Hears a Who
Charlie and the Chocolate Factory
Charlotte's Web
The Giving Tree
Harriet the Spy
Half Magic
I grew up reading all the Nancy Drew mysteries and the Hardy Boys too.
I loved Trixie Belden books....and the Bobbsey Twins
Then there were the "Alfred Hitchcock presents the Three Investigators" series.....and I still have all of them.
Other than that, there were hundreds more by various authors.
Three favorites were:
The Witch Of BlackBird Pond
The Watching Eyes
Step on a Crack
My Side of the Mountain.
It's the story of a boy who runs away from NYC to his old family farm, now grown into forest. He learns to survive and thrive in the wild, with the help of the peregrine falcon he raises.
The Chronicles of Narnia.
The Little House on the Prairie book series (NOTHING like the silly TV series)
Harry Potter
The Tracker
True story of Tom Brown and his friend being trained by his friend's Apache grandfather since he was eight years old, to track anything, live and thrive on his own in the wild.
All the Robert A. Heinlein youth series, which I currently own on Kindle.
The James Herriot series, about a veterinarian working in the Yorkshire Dales.
I loved the Little House books. Definitely, NOTHING like the series. And it always bothered me that Pa Ingalls had such an awesome feathered haircut.
Love your list, also love you forever, skippyjohn Jones, the Harry Potter series, the Eragon series, gosh, theres too many that I've lived but can't think of titles!!!
Catwings and Catwings Returns by Ursula Le Guin. Wish I had these as a kid.
As a kid a grade one teacher read us The Hobbit and the Narnia books, which I think is why I have always loved fantasy... Well that plus growing up watching Teddy Ruxpin.
I think as for YA books my current and all time favorites are the first 3 Earthsea books, that and Le Guin's other YA series called the Annals of the Western Shore (Gifts, Voices, and Powers).
One other I really loved as a kid was Would You Rather Be A Bullfrog? which I think was a Dr Seuss book
As a child I was in love with the OZ books begun by L. Frank Baum and finished by Ruth P Thompson. They were regarded as pure fantasy but supposedly had political messages relevant to the times, i.e. yellow brick road was thought to correspond to the "gold standard" which was being debated at the time, in the early 1900s.
I've read a few of the Oz books. Very allegorical, and much darker than the MGM movie!
Lord of the rings, and the Hobbit.
Over the years I've re read those books many times over.