The Book of Geese (Dave Holderread) than I have checked out from the library doesn't mention any specific personality traits, just that they are a good "all-around" goose for the home flock. He advises to move slowly around geese of all ages, and to not feed them from your hand.
Congratulations on your new additions!
My baby geese are 10 days old now, and yesterday had a great time following me around the property, munching on grass all the way.