Suggestions by @mrtoddwilkins

Allie Cassellis

as Heather Farrell in Degrassi Junior High/Degrassi High (1996-2002)

Score: +1

Jessica Cassellis

as Erica Farrell in Degrassi Junior High/Degrassi High (1996-2002)

Score: +1

Elisha Cuthbert

as Stephanie Kaye in Degrassi Junior High/Degrassi High (1996-2002)

Score: +1

Chris Witaske

as Nicolas Kaye in Degrassi Junior High/Degrassi High (1996-2002)

Score: +1

Dana Plato

as Sandra Bacon in Sweet Valley High (80s)

Score: +4

Betsy Russell

as Maria Santelli in Sweet Valley High (80s)

Score: +2

Rebecca Schaeffer

as Lynne Henry in Sweet Valley High (80s)

Score: +3

Kelly Preston

as Dana Larson in Sweet Valley High (80s)

Score: +3

Lauri Hendler

as Robin Wilson in Sweet Valley High (80s)

Score: +1

Phoebe Cates

as Jean West in Sweet Valley High (80s)

Score: +1

Erin Krakow

as Nora Dalton in Sweet Valley: The CW Version (2019-2024)

Score: +1

Colin O'Donoghue

as Jeffrey Collins in Sweet Valley: The CW Version (2019-2024)

Score: +1

Scott Glenn

as Ned Wakefield in Sweet Valley High (80s)

Score: 0

Elizabeth Keifer

as Tricia Martin in Sweet Valley High (80s)

Score: +5

Courtney Thorne-Smith

as Amy Sutton in Sweet Valley High (80s)

Score: +2

Paul Dooley

as Mr. Cooper in Sweet Valley High (80s)

Score: +2

Dennis Quaid

as Bob Russo in Sweet Valley High (80s)

Score: +2

Karen Allen

as Nora Dalton in Sweet Valley High (80s)

Score: +2

Robert Redford

as Roger Collins in Sweet Valley High (80s)

Score: +2

Nancy McKeon

as Annie Whitman in Sweet Valley High (80s)

Score: +2