I’m really liking [name_m]Nathaniel[/name_m] but don’t want a [name_u]Nat[/name_u], [name_m]Natty[/name_m], or [name_m]Nate[/name_m] nickname. Is there another option out there?
[name_m]Nathaniel[/name_m] [name_m]Hawthorne[/name_m]'s nickname was Hath … from his surname obviously but I think it could still work as a nickname for [name_m]Nathaniel[/name_m].
I read in a book that there was a character whose name was [name_m]Nathaniel[/name_m], but he went by [name_u]Neil[/name_u]. [name_f]Hope[/name_f] that helps!
I [name_m]Nathaniel[/name_m] nn [name_u]Niall[/name_u] on my list and I knew a [name_m]Nathaniel[/name_m] called [name_m]Tanner[/name_m], they’re both a little out of the box but yeah
[name_m]Nathan[/name_m]
[name_m]Thad[/name_m] (probably only if the MN started with D)
I like the previous suggestions of [name_u]Neil[/name_u] and [name_u]Niall[/name_u]
Nathy (pernounced ‘nath-ey’)
Nath (pernounced ‘nay-th’)
That’s all I can think of, sorry.
I second [name_u]Neil[/name_u] - that’s lovely. Maybe [name_m]Hank[/name_m]? 
[name_m]How[/name_m] about [name_m]Thaniel[/name_m]?