[name_m]Welcome[/name_m]!
With [name_f]Miley[/name_f] [name_f]Grace[/name_f], I like from his list for a girl:
[name_f]Zara[/name_f] or [name_f]Esme[/name_f] (short and sweet)
From yours:
[name_f]Veda[/name_f] and [name_f]Freya[/name_f]
I like several names you listed but prefer sibling names that are similar in style but don’t start and end the same or have similar strong vowel sounds, so as to avoid being too matchy.
For boys, his list:
I prefer [name_m]Colson[/name_m], which is also on your list. [name_m]Marlow[/name_m] is a bit matchy. [name_m]Ezra[/name_m] and [name_m]Silas[/name_m] are more popular than [name_m]Colson[/name_m]. [name_m]Jonah[/name_m] and [name_m]Bowie[/name_m] are great sib names to [name_f]Miley[/name_f].
[name_f]Miley[/name_f] [name_f]Grace[/name_f] &
[name_f]Esme[/name_f] [name_f]Harlow[/name_f], [name_f]Zara[/name_f] [name_m]Bellamy[/name_m], [name_f]Zara[/name_f] [name_f]Bronwyn[/name_f], [name_f]Veda[/name_f] [name_f]Madelyn[/name_f], [name_f]Freya[/name_f] [name_f]Harlow[/name_f]
[name_m]Colson[/name_m] [name_m]Jonah[/name_m], [name_m]Colson[/name_m] [name_m]Marlow[/name_m], [name_m]Jonah[/name_m] [name_m]Marlow[/name_m], [name_m]Bowie[/name_m] [name_m]Marlow[/name_m]
Some that might resonate with you both and also fit with [name_f]Miley[/name_f] [name_f]Grace[/name_f]:
[name_m]Ever[/name_m], [name_m]Knox[/name_m], [name_f]Winter[/name_f], [name_f]Laken[/name_f], [name_f]Indie[/name_f], [name_f]Vera[/name_f], [name_f]Ellery[/name_f], [name_m]Landry[/name_m], [name_f]Alena[/name_f], [name_f]Ariadne[/name_f], [name_f]Daphne[/name_f], [name_f]Calla[/name_f]
[name_m]Gannon[/name_m], [name_m]Gareth[/name_m], [name_m]Hollis[/name_m], [name_m]Braxton[/name_m], [name_m]Breck[/name_m], [name_m]Collin[/name_m], [name_m]Collier[/name_m], [name_m]Sadler[/name_m], [name_m]Sumner[/name_m], [name_m]Sparrow[/name_m], [name_m]Turner[/name_m]