This is a good list, bit I'd like to add a few names:
1. Dean Stockwell--"Kim," "The Boy with Green Hair," "Gentlemen's Agreement,"
etc. When I think of child actors, I automatically think of him.
2. Brandon deWilde-- "Shane," "Member of the Wedding" "Night Passage" traded
off his looks, but held his own with the likes of Jean Arthur, Julie Harris, James
Stewart.
3. Patty McCormack--"The Bad Seed." This is the only film of hers that I have
ever seen and it's enough. She left an impression.
4. Natalie Wood--"Miracle on 34th Street," "The St