Longish boys names that can be shortened for nicknames.

[Nai]

Nicholas - Nick
Tobias - Toby
Jonathan - john, jack
Maxwell - max
Alexander - Alex
Matthew - Matt
Joseph - Joe
William - will, bill, liam
Charles - chas, Charlie
Jeremy - jem, jerry
Timothy - Tim
Edward - Ned, Eddie

[Jennie13]

Joshua - Josh
A friend has a Leonidus and he gets Leo

[feeb]

Love Harrison (I am biased thought)
Leonardo/Leon = Leo
William = Will
Alasdair = Ally
Alexander = Alex, Zander, Ally
Richard = Rich, Richie, ****
Lucas = Luke
Donald = Don
Timothy = Tim
Michael = Mick, Mikey
Nathanial = Nat, Nate, Nathan, Nath
Bernard = Bernie
Edward = Ted, Eddie, Teddy
James = Jim, Jimmy
Patrick = Pat, Patty
Sebastaian = Seb
Joshua = Josh, Joshy
Gabriel = Gabe

[Rivlas]

Anthony - Ant, Tony
Geoffrey - Geoff
Philip - Phil
Jeffrey - Jeff
Robert - Rob
Zachary - Zac, Zach
Rodney - Rod
Trevor - Trev
Andrew - Andy, Drew
Stanley - Stan
Stephen - Steve
Daniel - Dan
Alistair - Al
James - Jim
Randall - Rans
Maurice - Morrie
Brenton - Brent
Desmond - Des
Benjamin - Ben
Ronald - Ron
Bennett - Ben
Lewis - Lew
David - Dave
Mitchell - Mitch
Peter - Pete
Nigel - Nige
Samuel - Sam
Richard - Rich
Malcolm - Mal
Bradley - Brad
Christopher - Chris
Nathaniel - Nate

[MrsFabuloso]

My boys are Liam (Li) and Caelan (Cae). Liam can be the short form of William too.

Our nephews are Alexander (Al/Alex), Nicholas (Nic) and William (Will); Justin (Juz);

Friends kids; Jonathon (Jon), Andrew (Drew), Isaac (Zac), Owen (O), Lucas (Luc), Baiden (B or Bay), Benjamin (Ben, Benji), Christopher & Christian (Chris)