Congrats. Not sure if you meant less popular middles for just the first two, or for all of them, so I went with all of them. Such a lovely bunch of names by the way!
Eleanor
Eleanor Astoria
Eleanor Ambrosia
Eleanor Elvira
Eleanor Ione
Eleanor Kindred
Eleanor Sable
Eloise
Eloise Briony
Eloise Romilly
Eloise Melrose
Eloise Roselore
Eloise Zenobia
Eloise Blythe
Vera
Vera Meliora
Vera Briony
Vera Romilly
Vera Kindred
Vera Laelia
Vera Ottilie
Zoe
Zoe Astoria
Zoe Avonlea
Zoe Briony
Zoe Kindred
Zoe Mavis
Zoe Ottilie
Isla
Isla Briony
Isla Romilly
Isla Hannelore
Isla Kindred
Isla Melrose
Isla Tempest
Serena
Serena Avonlea
Serena Hannelore
Serena Ione
Serena Kindred
Serena Mavis
Serena Winsome
Penelope
Penelope Avonlea
Penelope Ione
Penelope Lyra
Penelope Sable
Penelope Tempest
Penelope Torrence
I also wonder if you had thought of Verity? A bit more uncommon than Vera, I think. Of course you’re free to mix and match. Hope this helps, and good luck.
-Kit