HELP! I'm stuck in a name rut!

I currently have two boys with my third (a girl) due in [name_u]November[/name_u]. Their names are:

[name_u]Sawyer[/name_u] Cashell (Cashell is an Irish Surname that runs in the fam)
[name_m]Greyson[/name_m] [name_u]James[/name_u] ([name_u]James[/name_u] is also a family name)

Our last name is Obermueller, which can make naming tricky. My first son, [name_u]Sawyer[/name_u] has a different last name, so discount his name when considering the overall “flow” of the name there.

Naming [name_u]Grey[/name_u] was easy, however, with a girl and our strong, long and mouthful-of-a-last name, I find myself struggling. I love [name_u]River[/name_u] (open to middle name suggestions, [name_f]Rose[/name_f] was thrown out at one point) however, I get caught up in the repeating -er sounds and it becoming difficult to say.

Anything ending in -ley that resembles [name_f]Tenley[/name_f] is out ([name_u]Finley[/name_u], [name_u]Everly[/name_u], etc…) as that is my niece’s name.
I’m a big fan of nicknames, as well, so that’s also a must. Here are a few I’ve liked:

[name_f]Ophelia[/name_f]-No middle name ideas, not crazy about nickname options and maybe too much of a mouthful with the last name?

[name_f]Daisy[/name_f]- Really liking [name_f]Daisy[/name_f] at the moment, stuck on a middle name. [name_f]Daisy[/name_f] [name_f]Adele[/name_f]? [name_f]Daisy[/name_f] [name_f]Adalie[/name_f]? [name_f]Daisy[/name_f] [name_f]Belle[/name_f]? Would like to middle name to be one to two syllables to avoid the mouthful conundrum, exclude [name_f]Mae[/name_f], [name_u]Eloise[/name_u], [name_f]Ann[/name_f], [name_f]Marie[/name_f].

[name_f]Autumn[/name_f] Obermueller has a nice ring to it, especially since she’ll be born in Novemeber. Could we Call her Auttie for short? Open to middle name suggestions.

[name_f]Nora[/name_f] is nice, though I’m not sure it’s unique enough?

I like ethereal sounding names, nature based names, feminine names (as our last name is very [name_m]German[/name_m] and Masculine.) Some others I’ve enjoyed but have been booted from my hubby are:
[name_f]Freya[/name_f], [name_f]Anabel[/name_f] (too common, he says!) [name_f]Hazel[/name_f] (He has an angry grandmother by that name), [name_f]Poppy[/name_f], [name_u]Juniper[/name_u] (Our best friend’s daughter is named [name_u]June[/name_u]), [name_f]Matilda[/name_f](Not giving up on this one yet as I love [name_f]Tillie[/name_f] for a nickname, it’s [name_m]German[/name_m], and the namesake of one of our favorite Alt-J songs!) and [name_u]Prairie[/name_u].

Thanks in advance!

I think [name_f]Daisy[/name_f], [name_f]Autumn[/name_f], and [name_f]Nora[/name_f] are all nice. Agree that [name_f]Ophelia[/name_f] is a little heavy with your surname. [name_u]River[/name_u] leans masculine to me so I would pick something more feminine to balance out the last name.

I like [name_f]Daisy[/name_f] [name_f]Adele[/name_f]. Maybe [name_f]Autumn[/name_f] [name_f]Elise[/name_f]? I think Auttie/[name_u]Audie[/name_u] works as a nickname. [name_f]Matilda[/name_f] is also cute.

Other ideas:

[name_f]Amelia[/name_f]/[name_f]Millie[/name_f]
[name_f]Aurora[/name_f]/[name_u]Rory[/name_u]
[name_f]Camille[/name_f]/[name_f]Millie[/name_f]
[name_f]Elaina[/name_f]/[name_f]Lainy[/name_f]
[name_f]Elodie[/name_f]/[name_f]Ellie[/name_f]
[name_f]Emmeline[/name_f]/[name_f]Emmy[/name_f]
[name_f]Georgia[/name_f]/[name_f]Gigi[/name_f]
[name_u]Hadley[/name_u]/[name_f]Hattie[/name_f]
[name_f]Ingrid[/name_f]/[name_f]Indie[/name_f]
[name_f]Laurel[/name_f] or [name_f]Lorelei[/name_f]/[name_f]Laurie[/name_f] or maybe [name_u]Rory[/name_u]
[name_f]Rosalie[/name_f]/[name_f]Rosie[/name_f]
[name_u]Winter[/name_u]/[name_f]Winnie[/name_f]

I love [name_f]Ophelia[/name_f], and I think [name_f]Poppy[/name_f] is an adorable nickname for it. [name_u]River[/name_u] is also adorable, and there’s a family with a little girl names [name_u]River[/name_u] [name_f]Emie[/name_f] on YouTube who’ve made me love it even more. Some other ideas:

[name_f]Ayla[/name_f] (AY-lah)
[name_f]Calla[/name_f]
[name_f]Ellie[/name_f]
[name_f]Flora[/name_f]
[name_f]Gemma[/name_f]
[name_f]Hailey[/name_f]
[name_f]Isla[/name_f] (EYE-lah)
[name_f]Lila[/name_f]
[name_f]Macy[/name_f]
[name_u]Quinn[/name_u]
[name_u]Ruby[/name_u]
[name_f]Selah[/name_f]
[name_f]Tessa[/name_f]
[name_u]Wren[/name_u]
[name_f]Zara[/name_f]

[name_f]Daisy[/name_f] [name_f]Adele[/name_f] is my favorite of your options. It is a lovely, unexpected combo and it works well with your surname. Another suggestion would be [name_f]Clara[/name_f].

I really like [name_f]Daisy[/name_f] [name_f]Adele[/name_f].

I immediately thought of [name_f]Delia[/name_f] for you.