Sho seems most intuitive but I think you could make some smoosh nicknames depending on the middle name.
[name_f][/name_f][name_m]Sholto[/name_m] [name_m]Nicholas[/name_m] nn [name_m]Tony[/name_m]
[name_f][/name_f][name_m]Sholto[/name_m] [name_m]Barnaby[/name_m] nn [name_m]Toby[/name_m]
[name_f][/name_f][name_m]Sholto[/name_m] [name_m]Malachi[/name_m] nn [name_m]Tommy[/name_m] or Shai/Shi or [name_m]Sky[/name_m]
[name_f][/name_f][name_m]Sholto[/name_m] [name_m]Laurence[/name_m] nn [name_m]Shaun[/name_m]
[name_f][/name_f][name_m]Sholto[/name_m] [name_m]Abraham[/name_m] nn [name_m]Shay[/name_m]
[name_f][/name_f][name_m]Sholto[/name_m] [name_m]Boniface[/name_m] nn [name_m]Sonny[/name_m]
[name_f][/name_f][name_m]Sholto[/name_m] [name_m]Kincaid[/name_m] nn [name_m]Shade[/name_m]