We’re in love with [name_f]Iris[/name_f], but we’re having a hard time finding a middle we love for it. He really likes [name_f]Iris[/name_f] [name_f]Hermione[/name_f], I’m not sold on it. I like [name_f]Iris[/name_f] [name_f]Moon[/name_f] and [name_f]Iris[/name_f] [name_f]Isabelle[/name_f], but I don’t know about the double I, if maybe that’s tacky or not. [name_f]Isabelle[/name_f] also clashes a little with the last name ([name_u]Elliott[/name_u]) so I was thinking maybe using a second middle name between them, maybe [name_f]Iris[/name_f] [name_f]Isabelle[/name_f] [name_f]Moon[/name_f], or I also like [name_f]Iris[/name_f] [name_f]Isabelle[/name_f] [name_u]Sky[/name_u] (could be a combo of our names, [name_u]Shane[/name_u] & [name_f]Kylie[/name_f].) We could also do that with [name_f]Hermione[/name_f] too, since DH really likes that one, so maybe something like [name_f]Iris[/name_f] [name_f]Hermione[/name_f] [name_f]Moon[/name_f] or [name_f]Iris[/name_f] [name_f]Hermione[/name_f] [name_u]Sky[/name_u]. He was also really loving [name_f]Iris[/name_f] Jadzia (like Jadzia [name_m]Dax[/name_m] from [name_f]Star[/name_f] Trek, but I’d rather use [name_m]Dax[/name_m] for a boy in the future.) Some of our other ideas were [name_f]Iris[/name_f] [name_f]Claire[/name_f], [name_f]Iris[/name_f] [name_u]Grey[/name_u], [name_f]Iris[/name_f] [name_f]Jane[/name_f], [name_f]Iris[/name_f] [name_f]Amelia[/name_f], [name_f]Iris[/name_f] [name_f]Olivia[/name_f], and [name_f]Iris[/name_f] [name_f]Penelope[/name_f], but again, we’re not completely sold on anything yet. Any suggestions are greatly appreciated!
I think [name_f]Iris[/name_f] [name_f]Hermione[/name_f] + a second middle of your choosing would be really nice. [name_f]Claire[/name_f], [name_u]Grey[/name_u], or [name_f]Jane[/name_f] would all work nice too.
[name_f]Iris[/name_f] [name_f]Hermione[/name_f] [name_u]Sky[/name_u] is nice. I quite like [name_f]Iris[/name_f] [name_f]Isabelle[/name_f], [name_f]Iris[/name_f] [name_f]Penelope[/name_f] and [name_f]Iris[/name_f] [name_f]Olivia[/name_f] too
Some others
[name_f]Iris[/name_f] [name_f]Amelie[/name_f]
[name_f]Iris[/name_f] [name_f]Aurelia[/name_f]
[name_f]Iris[/name_f] [name_f]Clara[/name_f]
[name_f]Iris[/name_f] [name_f]Talullah[/name_f]
[name_f]Iris[/name_f] [name_f]Ariana[/name_f]
[name_f]Iris[/name_f] [name_f]Georgina[/name_f]
[name_f]Iris[/name_f] [name_f]Hailey[/name_f]
[name_f]Iris[/name_f] [name_f]Camille[/name_f]
My first thought was [name_f]Iris[/name_f] [name_f]Ophelia[/name_f]! It gives me the same vibes as [name_f]Hermione[/name_f] and [name_f]Olivia[/name_f]. 
From your list, I like [name_f]Iris[/name_f] [name_u]Grey[/name_u], [name_f]Iris[/name_f] [name_f]Olivia[/name_f], and [name_f]Iris[/name_f] [name_f]Penelope[/name_f].
Other ideas:
[name_f]Iris[/name_f] [name_f]Luna[/name_f]
[name_f]Iris[/name_f] [name_f]Emilia[/name_f]
[name_f]Iris[/name_f] [name_f]Phoebe[/name_f]
[name_f]Iris[/name_f] [name_f]Nova[/name_f]
[name_f]Iris[/name_f] [name_f]Indira[/name_f]
[name_f]Iris[/name_f] [name_f]Noelle[/name_f]
[name_f]Iris[/name_f] [name_u]Everly[/name_u]
[name_f]Iris[/name_f] [name_f]Leia[/name_f]
[name_f]Iris[/name_f] [name_f]Willow[/name_f]
I like [name_f]Iris[/name_f] [name_f]Emilia[/name_f] and [name_f]Iris[/name_f] [name_f]Amelie[/name_f], thank you for those suggestions
What do you think of [name_u]Lennon[/name_u]? I used to only like that name for a boy, but recently it’s been growing on me for a girl too, and we came up with [name_f]Iris[/name_f] [name_u]Lennon[/name_u] [name_u]Sky[/name_u] a little while ago, I honestly I kinda like it.
I love [name_f]Iris[/name_f]! Reminds me of the great writer [name_f]Iris[/name_f] Murdoch.
[name_f]Iris[/name_f] [name_f]Hermione[/name_f]: while both are lovely names, together they sound lurchy.
[name_f]Iris[/name_f] [name_f]Moon[/name_f]: this is cute and unexpected and I really like it.
[name_f]Iris[/name_f] [name_f]Isabelle[/name_f]: yeah, this doesn’t work. The double-Is sound odd, and it just doesn’t look nice. And the styles don’t work together.
[name_f]Iris[/name_f] [name_f]Isabelle[/name_f] [name_u]Sky[/name_u]: three names is a lot, and while it sounds okay, these three don’t work together stylistically.
[name_f]Iris[/name_f] Jadzia: this is clunky.
[name_f]Iris[/name_f] [name_f]Claire[/name_f], [name_f]Jane[/name_f], [name_f]Olivia[/name_f]: these names are too common. Would love to see something more diverse with such a great name as [name_f]Iris[/name_f]!
[name_f]Iris[/name_f] [name_u]Grey[/name_u]: a little intriguing. I feel like I should dislike it, but I really don’t.
My suggestions:
[name_f]Iris[/name_f] [name_f]Felicity[/name_f]
[name_f]Iris[/name_f] [name_f]Agatha[/name_f]
[name_f]Iris[/name_f] [name_f]Freya[/name_f]
[name_f]Iris[/name_f] [name_f]Fiona[/name_f]
[name_f]Iris[/name_f] [name_f]Delphine[/name_f]
[name_f]Iris[/name_f] [name_f]Rowena[/name_f]
[name_f]Iris[/name_f] [name_f]Aveline[/name_f]
[name_f]Iris[/name_f] [name_f]Octavia[/name_f]
[name_f]Iris[/name_f] [name_f]Hermione[/name_f] is just wonderful!
If you decide on 3 names I also think [name_f]Iris[/name_f] [name_f]Hermione[/name_f] [name_f]Moon[/name_f] is great! I also like [name_f]Iris[/name_f] [name_f]Penelope[/name_f]. I don’t think any of your other options come close to these.
[name_f]Iris[/name_f] [name_f]Aurora[/name_f]
[name_f]Iris[/name_f] [name_f]Anastasia[/name_f]
[name_f]Iris[/name_f] [name_f]Cosima[/name_f]
[name_f]Iris[/name_f] [name_f]Claudia[/name_f]
[name_f]Iris[/name_f] [name_f]Demetria[/name_f]
[name_f]Iris[/name_f] [name_f]Florence[/name_f]
[name_f]Iris[/name_f] [name_f]Henrietta[/name_f]
[name_f]Iris[/name_f] [name_f]Juliette[/name_f]
[name_f]Iris[/name_f] [name_f]Luna[/name_f]
[name_f]Iris[/name_f] [name_f]Lucinda[/name_f]
[name_f]Iris[/name_f] [name_f]Matilda[/name_f]
[name_f]Iris[/name_f] [name_u]Meredith[/name_u]
[name_f]Iris[/name_f] [name_f]Natasha[/name_f]
[name_f]Iris[/name_f] [name_f]Ophelia[/name_f]
[name_f]Iris[/name_f] [name_f]Ottilie[/name_f]
[name_f]Iris[/name_f] [name_f]Persephone[/name_f]
[name_f]Iris[/name_f] [name_f]Rosina[/name_f]
[name_f]Iris[/name_f] Serephina
[name_f]Iris[/name_f] [name_f]Tatiana[/name_f]
[name_f]Iris[/name_f] [name_f]Vivienne[/name_f]
[name_f]Iris[/name_f] [name_f]Victoria[/name_f]
[name_f]Iris[/name_f] [name_f]Valentina[/name_f]
X
A long flowy middle name would pair beautifully with [name_f]Iris[/name_f]:
[name_f]Iris[/name_f] [name_f]Persephone[/name_f]
[name_f]Iris[/name_f] [name_f]Cordelia[/name_f]
[name_f]Iris[/name_f] [name_f]Henrietta[/name_f]
[name_f]Iris[/name_f] [name_f]Matilda[/name_f]
[name_f]Iris[/name_f] [name_f]Colette[/name_f]
However, considering your last name, I do thing a single-syllable middle name would give the nicest flow to [name_f]Iris[/name_f]. What about:
[name_f]Iris[/name_f] [name_f]Blanche[/name_f]
[name_f]Iris[/name_f] [name_f]Faye[/name_f]
[name_f]Iris[/name_f] [name_f]Neve[/name_f]
[name_f]Iris[/name_f] [name_f]Blythe[/name_f]
[name_f]Iris[/name_f] [name_f]Gwen[/name_f]
[name_f]Iris[/name_f] [name_f]Paige[/name_f]
[name_f]Iris[/name_f] [name_f]Jane[/name_f]
[name_f]Iris[/name_f] [name_u]Rae[/name_u]
[name_f]Iris[/name_f] [name_f]Maude[/name_f]
[name_f]Iris[/name_f] [name_f]Maeve[/name_f]
[name_f]Iris[/name_f] [name_f]Claire[/name_f]
[name_f]Iris[/name_f] [name_u]Scout[/name_u]
(my favorites in bold)