[name_m]Gage[/name_m] is nms but it is good as part of a double middle because of its brevity and distinct sound. My favourites from your list are [name_u]Kieran[/name_u] [name_m]Louis[/name_m] [name_m]Gage[/name_m], [name_u]Kieran[/name_u] [name_m]Oliver[/name_m] [name_m]Gage[/name_m] and [name_u]Kieran[/name_u] [name_m]Rafferty[/name_m] [name_m]Gage[/name_m], in that order.
I’m not a fan of [name_m]Gage[/name_m] personally. I think it works well in the middle though.
My favorite combos from your list are [name_u]Kieran[/name_u] [name_m]Rafferty[/name_m] [name_m]Gage[/name_m] and [name_u]Kieran[/name_u] [name_m]Louis[/name_m] [name_m]Gage[/name_m].