Hi there.
Here are my thoughts on your lists:
Girls-
Guinevere ([name_f]Winnie[/name_f])- Need I say more? [name_f]Guinevere[/name_f] has been my top girl name for nearly two decades. It’s perfect & bold & exotic & beautiful. I do love [name_f]Winnie[/name_f] too. Very sweet & lovable. Perfect w/Bowie & [name_f]Elle[/name_f].
Winslow ([name_f]Winnie[/name_f])-Honestly, it fits better w/Bowden & [name_u]Emory[/name_u]. But not as a beautiful as [name_f]Guinevere[/name_f].
Clementine ([name_f]Minnie[/name_f])-This is on my top ten list too! It’s so quirky & vintage & cheerful & sassy. [name_f]Minnie[/name_f] is an adorable fun underused nn. I also like [name_f]Cleo[/name_f].
Wyla (lala)-I’m not a fan of this one. The nn seems forced, & this will just get mistaken for the super popular [name_f]Isla[/name_f] all of the time.
A few girl ideas you may like:
Anwen nn [name_f]Winne[/name_f]
Arwen nn [name_f]Winnie[/name_f]
Briar nn [name_f]Bee[/name_f]
Branwen nn [name_f]Winnie[/name_f]
Ceridwen nn [name_f]Winnie[/name_f]
Eowyn nn [name_f]Wynnie[/name_f]
Felicity nn Fliss
Gwendolen nn [name_f]Winnie[/name_f]
Gwyneth nn [name_f]Winnie[/name_f]
Harriet nn [name_f]Hattie[/name_f]
Indigo nn [name_f]Idgie[/name_f]
Imogen nn [name_f]Imee[/name_f], [name_f]Idgie[/name_f], [name_f]Ginny[/name_f] or [name_f]Minnie[/name_f]!
Juniper nn [name_u]June[/name_u], [name_f]Junie[/name_f] or [name_f]Juno[/name_f]
Laurel nn [name_f]Lulu[/name_f]
Malin nn [name_f]Molly[/name_f]
Penelope nn [name_u]Penny[/name_u], [name_f]Polly[/name_f], [name_f]Poppy[/name_f] or [name_f]Nellie[/name_f]. I suppose [name_f]Penelope[/name_f] is a bit more common than most of my other suggestions, but it fits w/your crew nicely.
Romilly nn [name_f]Milly[/name_f]
Rowena nn [name_f]Winnie[/name_f]
Scarlet nn [name_u]Scout[/name_u]
Tessa nn [name_f]Tess[/name_f]
Valerie nn [name_f]Vivie[/name_f]
Wynn nn [name_f]Winnie[/name_f]
Boys-
Calloway ([name_u]Cal[/name_u])-I love [name_u]Cal[/name_u]. It’s so sleek, polished, friendly, gentle yet sporty. [name_u]Calloway[/name_u] is kind of interesting. It’s certainly unique & goes w/your crew. I also like [name_m]Calum[/name_m] & [name_m]Calvin[/name_m]. [name_m]Cillian[/name_m] or [name_m]Charles[/name_m] nn [name_u]Cal[/name_u] could also work.
Auden-[name_u]Auden[/name_u] nn [name_m]Ace[/name_m]! I like [name_m]Ace[/name_m] a lot w/Bowie & [name_f]Elle[/name_f]. [name_u]Auden[/name_u] & Bowden are a little too similar though, maybe.
Caspian ([name_m]Cas[/name_m])-This is really cool. [name_f]My[/name_f] dh loves this name, & he’s read all of the [name_f]Narnia[/name_f] books. I am not into them, so I’d feel weird using this, because I feel like its a strong association. Are you fans? [name_m]Caspar[/name_m] or [name_m]Cassius[/name_m] nn [name_m]Cas[/name_m] are also nice choices.
Jude-I love [name_u]Jude[/name_u]! It’s very warm & smart. What about [name_m]Julius[/name_m]?
Quill-Hm. I don’t personally love the sound of it, but it’s okay. Instead of [name_u]Quill[/name_u] nn Q, what about [name_m]Quillan[/name_m] nn [name_u]Quill[/name_u]?
Here are a few more boy suggestions that you may like:
Aubin nn [name_m]Ace[/name_m]
Alden nn [name_m]Ace[/name_m]
Atlas nn [name_m]Ace[/name_m] or [name_f]Atty[/name_f]
Atticus nn [name_f]Atty[/name_f], [name_m]Ace[/name_m], [name_u]Gus[/name_u] or [name_u]Kit[/name_u]
Beckett nn [name_u]Kit[/name_u]
Dashiell nn [name_u]Dash[/name_u]
Dexter nn [name_m]Dex[/name_m]
Gibson nn [name_m]Gib[/name_m] or [name_m]Gibby[/name_m]
Jameson nn [name_u]Jem[/name_u] or Jass
Malcolm nn [name_m]Mac[/name_m]
Malachy nn [name_m]Mac[/name_m]
Maverick nn [name_u]Mack[/name_u]
Rafferty nn [name_u]Rafe[/name_u]
Sullivan nn [name_u]Sully[/name_u]
Thatcher nn [name_m]Thatch[/name_m]
Whitman nn [name_u]Whit[/name_u]
Hope this helps.