Keeping with the theme you have, how about
[name_f]Nora[/name_f] or [name_f]Elspeth[/name_f] for a girl
[name_m]Eamon[/name_m] or [name_m]Graham[/name_m] for a boy
[name_f]Isla[/name_f] [name_f]Caitlin[/name_f], [name_m]Connor[/name_m] [name_u]James[/name_u], and…
Boy: [name_m]Desmond[/name_m] [name_m]Thomas[/name_m]
Girl: [name_f]Fiona[/name_f] [name_f]Catherine[/name_f]
All girl names:
Mackinnon [name_f]Eir[/name_f]
or Vierzon Olivie
or Jóna Ealisaid
or [name_f]Odile[/name_f] [name_f]Liljana[/name_f]
or Sulwyn Rós
or Riika [name_u]Fionn[/name_u]
or [name_f]Nika[/name_f] [name_f]Eowyn[/name_f]
or [name_f]Eirian[/name_f] [name_f]Adelais[/name_f]
or Kestra Willemijn
or Kenojuak Chamonix
or Päivä Grażyna
or Zlata [name_f]Viviane[/name_f]
or [name_f]Mireille[/name_f] Ravensara
or [name_m]Eli[/name_m]ška Kinvarra
or Daciana [name_f]Edit[/name_f]
or Kirsijóna [name_f]Giada[/name_f]
or Helike [name_f]Catrin[/name_f]
<3
Boy names:
[name_m]Olin[/name_m] [name_m]Prior[/name_m]
or [name_m]Kees[/name_m] [name_m]Whitaker[/name_m]
or [name_m]Byrne[/name_m] [name_m]Wilson[/name_m]
or Theoden [name_m]Hazard[/name_m]
or [name_u]Quinn[/name_u] Solo
or Søren [name_f]Indigo[/name_f]
or [name_m]Caelan[/name_m] Jaakkima
or Alder Yngve
or [name_m]Ian[/name_m] Wilde
or [name_u]Carlisle[/name_u] [name_u]True[/name_u]
or Seoc [name_u]Carlyle[/name_u]
[name_f]Brighid[/name_f] or [name_f]Faye[/name_f] for girls; [name_m]Finnegan[/name_m] (I love the nn of [name_u]Finn[/name_u] on boys) or [name_m]Duncan[/name_m] for boys were the first that came to mind! 
If it were up to me, I would go with:
[name_m]Lachlan[/name_m] [name_m]Charles[/name_m]
[name_f]Zoe/name_f Bridgid/[name_f]Bridget[/name_f]
[name_f]Isla[/name_f], [name_m]Connor[/name_m] and [name_u]Finn[/name_u]
[name_f]Isla[/name_f] [name_m]Connor[/name_m] and [name_u]Rhys[/name_u]
[name_f]Isla[/name_f] [name_m]Connor[/name_m] and [name_m]Liam[/name_m]
[name_f]Isla[/name_f] [name_m]Connor[/name_m] and [name_m]Rhett[/name_m]
[name_f]Isla[/name_f] [name_m]Connor[/name_m] and [name_u]Shea[/name_u]
[name_f]Isla[/name_f] [name_m]Connor[/name_m] and [name_f]Eva[/name_f]
[name_f]Isla[/name_f] [name_m]Connor[/name_m] and [name_f]Cora[/name_f]
[name_f]Isla[/name_f] [name_m]Connor[/name_m] and [name_f]Nora[/name_f]
[name_f]Isla[/name_f] [name_m]Connor[/name_m] and [name_f]Violet[/name_f]
[name_f]Isla[/name_f] [name_m]Connor[/name_m] and [name_u]Ruby[/name_u]
Oh how fun is this, For a boy I pick [name_m]Declan[/name_m] [name_m]Thomas[/name_m] and for a girl I pick [name_f]Ada[/name_f] [name_f]Maeve[/name_f]
Congratulations! Such great sibling names to add too!
For girls I like:
[name_u]Paisley[/name_u]
[name_u]Harper[/name_u]
[name_f]Fay[/name_f]
[name_u]Ruby[/name_u]
[name_f]Scarlett[/name_f]
[name_f]Charlotte[/name_f] (esp wih nickname [name_f]Letty[/name_f])
[name_f]Ada[/name_f]
[name_f]Jessa[/name_f]
[name_f]Erin[/name_f]
For the boys;
[name_m]Grant[/name_m] (as previously suggested)
[name_u]Parker[/name_u]
[name_m]Kevin[/name_m]
[name_m]Christopher[/name_m]
[name_m]Mark[/name_m]
[name_m]Matthew[/name_m]
[name_m]Steven[/name_m]/[name_m]Stephen[/name_m]
[name_m]Luke[/name_m]
[name_f]Emilia[/name_f] [name_f]Rose[/name_f] or [name_m]Jarvis[/name_m] [name_u]James[/name_u]
Wondering if I can add a request for 3rd baby names to this thread, not sure what we are having yet and I already have a
[name_m]Lachlan[/name_m] [name_m]Mitchell[/name_m] & [name_f]Amelie[/name_f] [name_f]Mae[/name_f], front runners at the moment are;
[name_m]Samuel[/name_m] [name_u]James[/name_u] and [name_f]Claire[/name_f] [name_f]Ellen[/name_f] ?
[name_f]TIA[/name_f]
and my suggestions for OP;
[name_f]Alice[/name_f] [name_f]Eloise[/name_f] & [name_m]Alexander[/name_m] [name_m]Daniel[/name_m]
[name_m]Connor[/name_m], [name_f]Isla[/name_f] and [name_u]Rory[/name_u]
[name_m]Connor[/name_m], [name_f]Isla[/name_f] and [name_u]Dylan[/name_u]
[name_m]Connor[/name_m], [name_f]Isla[/name_f] and [name_u]Ruby[/name_u]
[name_m]Connor[/name_m], [name_f]Isla[/name_f] and [name_f]Emilia[/name_f]
[name_u]Jaden[/name_u] [name_f]Pearl[/name_f] ([name_f]Pearl[/name_f] because that is the birthstone of [name_u]June[/name_u])
[name_m]Patrick[/name_m] [name_u]Wynn[/name_u] ([name_u]Wynn[/name_u] because it means “white, fair, handsome” and the colour for [name_u]June[/name_u] is white because of the pearl!)
Your children have gorgeous names, but I’m sure you will find one that fits in great!
[name_f]Isla[/name_f], [name_m]Connor[/name_m] and [name_u]Ainsley[/name_u]
[name_f]Isla[/name_f], [name_m]Connor[/name_m] and [name_u]Kendall[/name_u]
[name_f]Isla[/name_f], [name_m]Connor[/name_m] and [name_u]Harper[/name_u]
[name_f]Isla[/name_f], [name_m]Connor[/name_m] and [name_f]Claire[/name_f]
[name_f]Isla[/name_f], [name_m]Connor[/name_m] and [name_f]Leah[/name_f]
[name_f]Isla[/name_f], [name_m]Connor[/name_m] and [name_m]Jack[/name_m]
[name_f]Isla[/name_f], [name_m]Connor[/name_m] and [name_m]Boyd[/name_m]
[name_f]Isla[/name_f], [name_m]Connor[/name_m] and [name_u]Noah[/name_u]
[name_f]Isla[/name_f], [name_m]Connor[/name_m] and [name_m]Lachlan[/name_m]
[name_f]Isla[/name_f], [name_m]Connor[/name_m] and [name_m]Ethan[/name_m]
[name_f]My[/name_f] overall favorite is for girl [name_u]Ainsley[/name_u] and for a boy [name_m]Jack[/name_m]
Thanks for all the ideas everyone! Looking forward to discussing all the suggestions with hubby! Loving all the suggestions.
[name_f]Annabel[/name_f] [name_f]Rose[/name_f] or [name_m]Finnegan[/name_m] [name_m]Carew[/name_m]
I like the initial thing you have going on… IC, CJ… a J name in the first spot (because it’s middle, first, then middle again) would make a nice pattern continue. I don’t know if it was on purpose, but it’s a nice subtle pattern.
[name_f]Juliet[/name_f]
[name_f]Jocelyn[/name_f]
[name_f]Jane[/name_f]
I like [name_f]Josephine[/name_f], but it doesn’t suit your sibset. [name_u]Josie[/name_u], maybe?
[name_m]Joe[/name_m]/[name_m]Joseph[/name_m]
[name_m]Jack[/name_m]/son
[name_m]Julian[/name_m]
[name_m]Jonas[/name_m]
[name_u]Jay[/name_u]
Or another C name somewhere…
[name_f]Cassie[/name_f]
[name_f]Caroline[/name_f]
[name_f]Cambria[/name_f]
[name_f]Charlotte[/name_f]
[name_f]Clara[/name_f]
[name_u]Carter[/name_u]
[name_m]Clinton[/name_m]
[name_u]Corbin[/name_u]
[name_m]Caleb[/name_m]
[name_u]Charlie[/name_u]/[name_m]Charles[/name_m]
[name_u]Camden[/name_u]
or just other ones I like for you:
[name_f]Lucy[/name_f]
[name_f]Lily[/name_f] (maybe too close to [name_f]Isla[/name_f])
[name_f]Stella[/name_f]
[name_f]Naomi[/name_f]
[name_f]Mila[/name_f]
[name_f]Penelope[/name_f]
[name_f]Hazel[/name_f]
[name_f]Phoebe[/name_f]
[name_m]Landon[/name_m]
[name_m]Thomas[/name_m]
[name_m]Grayson[/name_m]
[name_m]Harrison[/name_m]
[name_m]Andrew[/name_m]
[name_u]Finn[/name_u]
[name_m]Lucas[/name_m]
If it was me?
[name_m]Jackson[/name_m] [name_m]Thomas[/name_m] or [name_f]Juliet[/name_f] [name_f]Hazel[/name_f]
[name_m]Harrison[/name_m] [name_m]Joseph[/name_m] or [name_f]Lucy[/name_f] [name_f]Penelope[/name_f]
Good luck!
Girls
[name_f]Freya[/name_f]
[name_f]Maeve[/name_f]
[name_f]Naomi[/name_f]
[name_f]Esme[/name_f]
[name_f]Cora[/name_f]
[name_f]Iona[/name_f]
[name_f]Sylvie[/name_f]
[name_f]Alma[/name_f]
[name_f]Sophie[/name_f]
[name_f]Margot[/name_f]
[name_f]Louise[/name_f]
[name_f]Ada[/name_f]
[name_f]Clara[/name_f]
[name_f]Marin[/name_f]
[name_u]Arden[/name_u]
[name_f]Phoebe[/name_f]
[name_f]Alice[/name_f]
Boys
[name_m]Hugo[/name_m]
[name_m]Oscar[/name_m]
[name_m]Cyrus[/name_m]
[name_u]Quincy[/name_u]
[name_m]Milo[/name_m]
[name_m]Felix[/name_m]
[name_m]Silas[/name_m]
[name_m]Elijah[/name_m]
[name_m]Archer[/name_m]
[name_u]Love[/name_u] [name_f]Isla[/name_f] [name_f]Caitlin[/name_f] and [name_m]Connor[/name_m] [name_u]James[/name_u] - wonderfully British names!!!
Keeping with the British names, how about…
[name_u]Brooke[/name_u] [name_u]Morgan[/name_u]
[name_f]Eleanor[/name_f] [name_f]Maisie[/name_f]
[name_u]Addison[/name_u] [name_f]Heather[/name_f]
[name_f]Faye[/name_f] [name_f]Gwendolyn[/name_f]
[name_f]Harriet[/name_f] [name_u]Morgan[/name_u]
[name_m]Jack[/name_m] [name_u]Ellis[/name_u]
[name_u]Alfie[/name_u] [name_u]Bryn[/name_u]
[name_u]Stanley[/name_u] [name_m]Duncan[/name_m]
[name_m]Robert[/name_m] [name_u]Finley[/name_u]
[name_m]Scott[/name_m] [name_u]Douglas[/name_u]
I love the combinations;
[name_f]Isla[/name_f], [name_m]Connor[/name_m] & [name_f]Eleanor[/name_f]
[name_f]Isla[/name_f], [name_m]Connor[/name_m] & [name_f]Faye[/name_f]
[name_f]Isla[/name_f], [name_m]Connor[/name_m] & [name_m]Jack[/name_m]
[name_f]Isla[/name_f], [name_m]Connor[/name_m] & [name_u]Alfie[/name_u]