Suggestions by @chrisriddle_redheart

Katie McGrath

as Lena Luthor in One Kryptonian, One Luthor & Two Original Vampires

Score: +1

Ian Somerhalder

as Damon Salvatore in One Kryptonian, One Luthor & Two Original Vampires

Score: +2

Nina Dobrev

as Katherine Pierce in One Kryptonian, One Luthor & Two Original Vampires

Score: +2

Melissa Benoist

as Kara Danvers in One Kryptonian, One Luthor & Two Original Vampires

Score: +2

Sofia Carson

as Lorelai Alexandra Luthor-Danvers in Supergirl & Lena

Score: +1

Austin Theory

as Chris Winslow Luthor-Danvers in Supergirl & Lena

Score: +1

Chyler Leigh

as Alex Danvers in Supergirl & Lena

Score: +1

Katie McGrath

as Lena Luthor in Supergirl & Lena

Score: +2

Elizabeth Tulloch

as Lois Lane in Supergirl & Lena

Score: +1

Jeremy Jordan

as Winslow Schott Jr. in Supergirl & Lena

Score: +1

David Harewood

as J'onn J'onzz in Supergirl & Lena

Score: +1

Amy Jackson

as Imra Ardeen-Matthews in Supergirl & Lena

Score: +1

Calista Flockhart

as Catherine Grant in Supergirl & Lena

Score: +1

Camila Mendes

as Sara Hart in Supergirl & Lena

Score: +1

Tyrel Jackson Williams

as M'yrnn J'onzz in Supergirl & Lena

Score: +1

Nicole Maines

as Nia Nal in Supergirl & Lena

Score: +1

Azie Tesfai

as Kelly Olsen-Danvers in Supergirl & Lena

Score: +2

Chris Wood

as Mon-El in Supergirl & Lena

Score: +1

Danielle Campbell

as Aria Ardeen-Matthews in Supergirl & Lena

Score: +1

Tyler Hoechlin

as Clark Kent/Kal-El in Supergirl & Lena

Score: +1