Boys: We have Ed, Edd, Eddie, Eddy, etc. for Edward
Andy for Andrew
Vic for Victor
Tom or Tommy for Thomas
Frank for Franklin
Nate/Nathan for Nathaniel
Nate for Nathan
Girls:
Vicky for Victoria
Andrea or Anna, I’ve seen Ann/Anne or Annie, also with Anabel/Anabelle too
Tanya for Tatyana but I don’t see many people with this name, I know one and she was my bully’s Russian mother.
Peggy being short for Margaret always confused me growing up so when I learned about how that happened I was genuinely fascinated.