We love to use family names for our kiddos or at least a variation of those names.
Our son is [name_m]Drake[/name_m] [name_m]Edward[/name_m] (great grandpas middle), our daughter is [name_u]Arden[/name_u] Emary (variation of [name_m]Henry[/name_m], my hubbys middle). This time we’d love to use [name_u]Emmett[/name_u] (grandpas middle). I’m leaning towards [name_m]Noble[/name_m] as a middle (the meaning of [name_m]Arthur[/name_m], my hubbys first name and a long running family name). He likes [name_m]Fritz[/name_m], also a family name.
[name_u]Emmett[/name_u] [name_m]Fritz[/name_m] last name F?
For a girl were thinking [name_u]Ellis[/name_u] [name_f]Isabelle[/name_f] or maybe just [name_u]Ellis[/name_u] [name_u]Bell[/name_u]. ([name_f]Belle[/name_f] was grandpas favorite aunt who helped raise him).
Does [name_u]Ellis[/name_u] sound to much like [name_f]Alice[/name_f]?
Other names we could use are [name_m]Harrison/name_m [name_m]Martin[/name_m], [name_f]Maxine[/name_f], [name_f]Elaine[/name_f], [name_f]Julia[/name_f], [name_f]Eleanor[/name_f].
I personally love the name [name_f]Ailish[/name_f], which is the Irish form of [name_f]Alice[/name_f] - And I think [name_f]Ailish[/name_f] [name_f]Belle[/name_f] would be really cute. If you want it to start with E there is also [name_f]Eilish[/name_f]. Another name I like is [name_u]Emery[/name_u] [name_f]Belle[/name_f]. [name_f]Hope[/name_f] it could help 
What about
Girls -
[name_u]Emmett[/name_u] [name_m]Noble[/name_m] [name_f]Belle[/name_f]
[name_f]Emmeline[/name_f] [name_f]Bella[/name_f] [name_m]Noble[/name_m]
Emmabelle [name_m]Noble[/name_m]
Emmarosa [name_f]Belle[/name_f]
[name_f]Elaina[/name_f] [name_f]Belle[/name_f]
[name_f]Juliette[/name_f] [name_f]Emelia[/name_f] [name_f]Belle[/name_f]
[name_f]Alice[/name_f] [name_f]Elaina[/name_f] [name_f]Belle[/name_f]
[name_f]Emily[/name_f] [name_f]Maxine[/name_f] [name_f]Belle[/name_f]
Emmabeth [name_f]Belle[/name_f] [name_f]Elaina[/name_f]
Boys -
[name_u]Emmett[/name_u] [name_m]Noble[/name_m]
[name_u]Ellis[/name_u] [name_m]Noble[/name_m]
[name_m]Darwin[/name_m] [name_m]Noble[/name_m]
[name_u]Hayden[/name_u] [name_m]Noble[/name_m]
[name_m]Harvey[/name_m] [name_m]Martin[/name_m] [name_m]Noble[/name_m]
[name_m]Harrison[/name_m] [name_m]Noble[/name_m]
[name_m]Halston[/name_m] [name_m]Martin[/name_m] [name_m]Noble[/name_m]
[name_u]Hollis[/name_u] [name_m]Noble[/name_m]
My favourites are Emmabelle [name_m]Noble[/name_m] and [name_m]Harvey[/name_m] [name_m]Martin[/name_m] [name_m]Noble[/name_m].
Ps. Is there anything this [name_u]Emmett[/name_u] was into/remind you of [name_u]Emmett[/name_u]. I might be alone on this but I prefer honour names that are about the person that simply their name and it might give me a better gauge.