Suggestions by @vincentedorchester

Morgan Spector

as Isidore Levinson in Downton Abbey: The Prequel

Score: +1

Harry Richardson

as Harold Levinson in Downton Abbey: The Prequel

Score: +1

Sam calfin

as Isidore Levinson in Downton Abbey: The Prequel

Score: +1

Amy Adams

as Martha Levinson in Downton Abbey: The Prequel

Score: +1

Maitland Ward

as Martha Levinson in Downton Abbey: The Prequel

Score: +1

Gillian Anderson

as Violet Crawley in Downton Abbey: The Prequel

Score: 0

Gillian Zinser

as Violet Crawley in Downton Abbey: The Prequel

Score: -1

Colin Firth

as Patrick Crawley in Downton Abbey: The Prequel

Score: +1

Anthony Boyle

as Marmaduke Painswick in Downton Abbey: The Prequel

Score: +1

Saoirse Ronan

as Lady Rosamund Crawley in Downton Abbey: The Prequel

Score: +1

Lily Collins

as Cora Levinson in Downton Abbey: The Prequel

Score: 0

Lucy Boynton

as Cora Levinson in Downton Abbey: The Prequel

Score: 0

Nicholas Hoult

as Robert Crawley in Downton Abbey: The Prequel

Score: +1

Jack Lowden

as Robert Crawley in Downton Abbey: The Prequel

Score: +1