From your list, I like [name_m]Edwin[/name_m] and [name_m]Calvin[/name_m] best. [name_m]Edwin[/name_m] nn [name_m]Win[/name_m] / [name_m]Winn[/name_m] is also really cute, in my opinion.
[name_f][/name_f][name_m]Valentine[/name_m] nn [name_m]Lenny[/name_m]
[name_f][/name_f][name_m]Hugo[/name_m] nn [name_m]Hugh[/name_m]
[name_f][/name_f][name_m]Gilbert[/name_m] nn [name_m]Gil[/name_m], [name_m]Bertie[/name_m], [name_m]Gibbs[/name_m]
[name_f][/name_f][name_m]Lawrence[/name_m] nn [name_m]Wren[/name_m]
[name_f][/name_f][name_m]Vincent[/name_m] nn [name_m]Vinnie[/name_m]
[name_f][/name_f][name_m]Gregory[/name_m] nn [name_m]Reggie[/name_m], [name_m]Greg[/name_m]
[name_f][/name_f][name_m]Warren[/name_m] nn [name_m]Wren[/name_m]
[name_f][/name_f][name_m]Seymour[/name_m] nn Mourie
[name_f][/name_f][name_m]Tobias[/name_m] nn [name_m]Toby[/name_m]
[name_f][/name_f][name_m]Sebastian[/name_m] nn [name_m]Seb[/name_m], [name_m]Bash[/name_m], [name_m]Ian[/name_m]
[name_f][/name_f][name_m]Orson[/name_m] nn [name_m]Orry[/name_m], [name_m]Sonny[/name_m]
[name_f][/name_f][name_m]Julian[/name_m] nn [name_m]Jules[/name_m], [name_m]Ian[/name_m], [name_m]Jude[/name_m]