[name_f]Do[/name_f] you have a favorite from this list or any suggestions to add? *Middle name will be [name_u]William[/name_u] (family name)
Current contenders:
[name_u]Rhys[/name_u]
[name_u]August[/name_u]
[name_u]Sutton[/name_u]
Names we love but won’t use:
[name_u]Bennett[/name_u]
[name_u]Jack[/name_u]
[name_m]Oliver[/name_m]
[name_m]Graham[/name_m]
[name_u]Sullivan[/name_u]
[name_u]August[/name_u] works wonders with Juliett3! A very summery sibling set 
Juli3tt3 and…
[name_m]Solomon[/name_m]
[name_m]Tobias[/name_m]
[name_u]Beckett[/name_u]
[name_m]Luther[/name_m]
[name_m]Conrad[/name_m]
[name_m]Maximilian[/name_m]
[name_u]Henry[/name_u]
[name_m]Ambrose[/name_m]
[name_m]Ezekiel[/name_m]
[name_m]Orson[/name_m]
[name_m]Dashiell[/name_m]
[name_u]Peregrine[/name_u]
[name_u]Finnegan[/name_u]
[name_u]Calder[/name_u]
[name_m]Beaumont[/name_m]
[name_m]Leopold[/name_m]
[name_u]Thaddeus[/name_u]
[name_m]Osmond[/name_m]
[name_m]Lewis[/name_m]
[name_m]Gideon[/name_m]
[name_m]Reuben[/name_m]
[name_m]Harrison[/name_m]
[name_f]Hope[/name_f] this helps
I love the name [name_u]Rhys[/name_u], but not sure he fits in well with [name_f]Juliette[/name_f], which is [name_u]French[/name_u] and Shakespearean. [name_u]August[/name_u] has become very popular, but Augustine/Augustus would work with [name_f]Juliette[/name_f].
Some of [name_m]Shakespeare[/name_m] names that work with [name_u]William[/name_u] are: [name_m]Edmund[/name_m], [name_m]Edgar[/name_m], [name_u]Henry[/name_u], [name_m]Richard[/name_m], [name_u]John[/name_u], [name_u]Lionel[/name_u], [name_u]Corin[/name_u], [name_m]Peter[/name_m], [name_m]Sebastian[/name_m], [name_m]Thomas[/name_m], [name_m]Geoffrey[/name_m], [name_u]Arthur[/name_u], [name_m]Malcolm[/name_m], [name_m]Duncan[/name_m], [name_m]Philip[/name_m], Antony/Anthony, and [name_m]Ross[/name_m].
[name_u]Rhys[/name_u] [name_u]William[/name_u] is dreammmmmmmmmmmmmy and is such a unique but AMAZING fit for [name_f]Juliette[/name_f] 
I prefer [name_u]Rhys[/name_u] out of your options, but I think that [name_u]August[/name_u] probably matches [name_f]Juliette[/name_f] the best, if that’s what you’re after.
I think August is the prettiest / most debonair choice but the coolest choice to me is Rhys - they sound like such a fun, artsy and adventurous pair, Juliette & Rhys! (I also don’t love the nicknames for August so that makes it more a middle name option only for me.)
I’m keener on Sutton for a girl and think with Juliette a lot of double Ts going around. Not the main thing though - more just have Sutton attached to a girl in my mind.
Otherwise:
Emrys
Lachlan
Rowen
Toby
Sebastian
Ronan
Gareth
Lucas
Conrad
Dylan
Fletcher
Hamish
Beckham
Hollis
Deacon
Sterling
Callahan
Calloway
Rafferty
Hayden
Timothy
Stanley
Brooks
Yale
Hope this helps!
How about:
[name_m]Sebastian[/name_m]
[name_m]Vincent[/name_m]
[name_m]Baptiste[/name_m]
[name_m]Louis[/name_m]
[name_m]Ethan[/name_m]
[name_m]Sergio[/name_m]
[name_m]Isidore[/name_m]
[name_m]Mathias[/name_m]
I love [name_u]August[/name_u] - elegant but gentle. [name_u]Rhys[/name_u] is cool too - rugged and charming.
A few more ideas with Juliette…
[name_m]Oscar[/name_m]
[name_m]Reuben[/name_m]
[name_m]Soren[/name_m]
[name_u]Auden[/name_u]
[name_m]Wilfred[/name_m]
[name_m]Malcolm[/name_m]
[name_m]Alistair[/name_m]
[name_m]Desmond[/name_m]
[name_m]Donovan[/name_m]
[name_m]Ralph[/name_m]
[name_u]Franklin[/name_u]
[name_f]My[/name_f] favorite is [name_u]August[/name_u] from your list!
[name_u]August[/name_u] is perfect! Additional suggestions just in case…
[name_m]Silas[/name_m]
[name_m]Bryson[/name_m]
[name_u]Archer[/name_u]
[name_m]Artem[/name_m]
[name_u]Hartley[/name_u]
[name_m]Fraser[/name_m]
[name_m]Nash[/name_m]
[name_u]Rhys[/name_u] and [name_u]August[/name_u] are both handsome!
[name_u]Augie[/name_u]
[name_u]Blaine[/name_u]
[name_u]Connor[/name_u]
[name_u]Elliott[/name_u]
[name_u]James[/name_u]
[name_u]Jameson[/name_u]
[name_m]Lewis[/name_m]
[name_u]Ollie[/name_u]
[name_m]Theodore[/name_m]
[name_m]Thomas[/name_m]