Hannah,
Abby,
Hope: vaguely sweet/cute but common and not particularly interesting.
Greer,
Hugh: unattractive sounds.
Greer in particular doesn't even sound like a name to me.
Meredith: pretty but mature.
Abigail fits with
Meredith while
Abby fits with
Hannah and
Hope.
Bronwyn: I like it but prefer
Bronwen
Gideon,
Simeon: I like them both but they're FAR too rhymey for brothers.
Owen: common but I like it
Isaac: too common to feel like anything, doesn't have a very attractive sound.
I'd switch out a few names to get:
Anna,
Rohan,
Conor,
Meredith,
Laurel,
Owen,
Bronwen,
Gideon,
Helena,
Simon,
Isaiah.
(I tried to keep something from the original names but not repeat any initials and some of them are just completely new names. But
Anna,
Bronwen,
Simon, and
Isaiah are based on the corresponding names from the sibset and I kept
Meredith,
Gideon, and
Owen.)