Amber: Amber-darling, brat, snob
Ashley: Ashly-girl
Biddy: Biddy white
Bonnie: Bon-Bon
Calvin: Calvin Klein
Fern: Missy Fern
Jasper: Jasper the friendly goblin
Jim: Jimmie Johnson
Kim: Little Kim
Lucas: Lucas-McGookus
Monte: Monte Sweeeeeeeet heart, mama's boy, special boy
Rutherford: Ruther-furry
Sterling: Mr. Sterling, Ster-man
Willow: Will, Willie

As you can see, they MOSTLY get called by their proper name.