Simplify the following text for a Grade 6 native English-speaking person.
Original: Disney 's Nine Old Men were the core animators ( some of whom later became directors ) at Walt Disney Productions who created some of Disney 's most famous works , from Snow White and the Seven Dwarfs onward to The Rescuers .
Simplified: Disney 's Nine Old Men were a group of animators who were very important names for Disney . They made many important works of Disney , from Snow White and the Seven Dwarfs to The Fox and the Hound .