Firstly congratulations!
You have a gorgeous list the only name I’m not a massive fan off is [name_m]Harrison[/name_m] but it’s still a solid choice.
You’ve had a few suggestions from the berries so count any repeats as me being in agreement with them.
Concerning middle names for your list here are some ideas…
[name_f]Margot[/name_f] [name_f]Arabella[/name_f]
[name_f]Margot[/name_f] [name_f]Dahlia[/name_f]
[name_f]Margot[/name_f] [name_u]Quinn[/name_u]
[name_f]Margot[/name_f] [name_f]Catherine[/name_f]
[name_f]Margot[/name_f] [name_f]Willa[/name_f]
[name_u]Wren[/name_u] [name_f]Matilda[/name_f]
[name_u]Wren[/name_u] [name_f]Charlotte[/name_f]
[name_u]Wren[/name_u] [name_f]Octavia[/name_f]
[name_u]Wren[/name_u] [name_f]Sophia[/name_f]
[name_u]Wren[/name_u] [name_f]Theodora[/name_f]
[name_f]Lily[/name_f] [name_f]Ophelia[/name_f]
[name_f]Lily[/name_f] [name_f]Rachel[/name_f]
[name_f]Lily[/name_f] [name_f]Emmeline[/name_f]
[name_f]Lily[/name_f] [name_f]Annabel[/name_f]
[name_f]Lily[/name_f] [name_u]Marlowe[/name_u]
Ideas
[name_f]Poppy[/name_f], [name_f]Juliet[/name_f], [name_f]Blythe[/name_f], [name_f]Felicity[/name_f], [name_f]Clara[/name_f], [name_u]Willow[/name_u], [name_f]Autumn[/name_f], [name_f]Willa[/name_f], [name_u]Ruby[/name_u], [name_f]Iris[/name_f], [name_f]Tabitha[/name_f], [name_f]Beatrix[/name_f], [name_f]Delta[/name_f], [name_f]Freya[/name_f], [name_f]Juno[/name_f], [name_f]Loretta[/name_f], [name_u]Blaire[/name_u], [name_u]Tatum[/name_u]
[name_m]Harrison[/name_m] [name_u]Bellamy[/name_u]
[name_m]Harrison[/name_m] [name_u]Poet[/name_u]
[name_m]Harrison[/name_m] [name_u]Scott[/name_u]
[name_m]Harrison[/name_m] [name_u]Sage[/name_u]
[name_m]Harrison[/name_m] [name_m]Willis[/name_m]
[name_u]Finn[/name_u] [name_m]Shepherd[/name_m]
[name_u]Finn[/name_u] [name_u]Montgomery[/name_u]
[name_u]Finn[/name_u] [name_m]Beaumont[/name_m]
[name_u]Finn[/name_u] [name_m]Abraham[/name_m]
[name_u]Finn[/name_u] [name_u]Jameson[/name_u]
Ideas
[name_m]Harvey[/name_m], [name_m]Henry[/name_m], [name_m]Archie[/name_m], [name_m]Ivan[/name_m], [name_u]Micah[/name_u], [name_m]Jeremiah[/name_m], [name_u]Amos[/name_u], [name_m]Isaac[/name_m], [name_m]Moses[/name_m], [name_u]Flynn[/name_u], [name_m]Peter[/name_m], [name_m]Simon[/name_m], [name_u]Rocco[/name_u], [name_m]Roman[/name_m], [name_u]Declan[/name_u], [name_m]Leander[/name_m], [name_m]Zachary[/name_m]
Good luck