I do think that [name_f]Orla[/name_f] is a little too close to [name_u]Arlo[/name_u]. I think it’s fine to have siblings with differences in the syllables of their names (me and my sister have three and four syllable names, well two and four syllable names if you use her nickname that she always goes by, and ours is a really pretty sibset.) You could name her [name_f]Aurora[/name_f] [name_u]Lee[/name_u] with the nickname [name_f]Orla[/name_f] or use [name_u]Elliot[/name_u].
I think [name_f]Orla[/name_f] and [name_u]Arlo[/name_u] are a little close, but if you love it, you should use it. They are individuals, they aren’t going to be a “sibset” their entire lives! That said, by favorite from your list is [name_f]Flora[/name_f].
There’s also
[name_f]Polly[/name_f]
[name_f]Lorna[/name_f]
[name_u]Lior[/name_u]
Loie
[name_f]Clio[/name_f]
[name_f]Olive[/name_f]
[name_u]Hollis[/name_u]
[name_f]Lois[/name_f]
[name_f]Laurel[/name_f] (no ‘o’ but it sounds like it)
[name_m]Way[/name_m] too close for me. I like [name_f]Flora[/name_f] from your short list and the PPs suggestion of [name_f]Clio[/name_f] and [name_f]Olive[/name_f]. I really don’t like [name_u]Elliot[/name_u] on a girl. What about [name_f]Eleanor[/name_f], [name_f]Lenore[/name_f] or [name_f]Liora[/name_f]?
I highly recommend [name_f]Opal[/name_f]. It’s a beautiful vintage name. I also recommend the name [name_u]Hollis[/name_u]. I knew a [name_u]Hollis[/name_u] who was really smart, beautiful and a talented dancer. [name_u]Lennox[/name_u] might be really nice, too! I would probably not worry too much about having a 3 syllable name, as I nearly pronounce [name_f]Joely[/name_f] that way, and [name_u]Bristol[/name_u] is actually a long name for having only two syllables, but that’s just me. There are many nice names with ‘o’ and ‘l’. Good luck!
[name_f]Joely[/name_f], [name_u]Bristol[/name_u], [name_u]Arlo[/name_u] and
[name_m]Way[/name_m] too close for me. They’re the exact same four letters with only the vowels rearranged, after all. I wouldn’t be concerned about the number of syllables – most people would never notice that unless it’s as extreme as using a five-syllable name after sticking with one syllable for the others.
I honestly think all three of the names on your current short list are too close to [name_u]Arlo[/name_u], sorry.
I think [name_u]Elliot[/name_u] would be a good choice for you (or [name_u]Ellery[/name_u]?) and I wouldn’t let the syllable thing bother me. PP’s suggestion of [name_f]Olive[/name_f] is also good. Also [name_f]Oona[/name_f] but I’m not sure if that’s your style.
We like [name_f]Cleo[/name_f] but aren’t digging the whole A B C name thing. So I don’t know now.
[name_u]Elliott[/name_u] is out, [name_f]Chloe[/name_f] is out, [name_f]Cleo[/name_f] is out, [name_f]Olive[/name_f] is okay though neither DH nor I like it 100%.
[name_m]Noble[/name_m]
[name_u]Lennon[/name_u]
[name_m]Dolan[/name_m]
[name_m]Gandolf[/name_m] (hubby added this to the list as a joke, I hope)
[name_m]Holden[/name_m]
[name_m]Lincoln[/name_m]
[name_m]Malcolm[/name_m]
[name_u]Ollie[/name_u]
[name_u]Logan[/name_u]
Still two syllables but not the same letters as [name_u]Arlo[/name_u].
But the other thing my running a million miles a minute brain is thinking about is [name_f]Orly[/name_f] and [name_f]Joely[/name_f] have the same ending sound. So what about that?
[name_u]Arlo[/name_u] and [name_f]Orla[/name_f] is too similar. What about Loya? It is similar to [name_f]Lola[/name_f]. Or a name that begins with A?
[name_u]Arlo[/name_u] and [name_f]Avalon[/name_f]
[name_u]Arlo[/name_u] and [name_f]Annaliese[/name_f]
[name_u]Arlo[/name_u] and [name_u]Arya[/name_u] etc.
Too close. My neighbor’s name is [name_f]Ora[/name_f], which sounds a little funny at first, but it fits her well and it sounds kinda nice. That still might be to close though.
I think [name_f]Orla[/name_f] is fine. It is similar to [name_u]Arlo[/name_u] - I should probably point out that they use the name 4 letters. But I still love it, and if your husband ever comes around, I would never stop you from using it!