Hello!
This is all hypothetical.
I adore the name [name_u]Finley[/name_u]. And I’m super into sibsets sounding good together.
Could you please rank these, by flow and sound? Not so much popularity, I don’t care about that.
[name_u]Finley[/name_u] would be for a boy, the second name for a girl 
[name_u]Finley[/name_u] and…[name_f]Raina[/name_f]
[name_u]Finley[/name_u] and…[name_f]Violet[/name_f]
[name_u]Finley[/name_u] and…[name_u]Rowan[/name_u]
[name_u]Finley[/name_u] and…[name_u]Evelyn[/name_u]
[name_u]Finley[/name_u] and…[name_f]Isla[/name_f]
Edited to add: DH just suggested Wren. I adore it. However, I am thrown off by the fact that Wren & Finley sounds like Ren & Stimpy…
I really like [name_u]Finley[/name_u] with [name_u]Rowan[/name_u]! [name_f]Raina[/name_f] would be my second favorite.
I think [name_f]Isla[/name_f] and [name_u]Evelyn[/name_u] sound a bit awkward when said out loud next to [name_u]Finley[/name_u]. [name_f]Violet[/name_f]'s alright, just really not my style (and I think [name_u]Rowan[/name_u]/[name_f]Raina[/name_f] match the trendy and cute vibe of [name_u]Finley[/name_u] better)
In response to emmievis (forgot to quote, oops…)
Interesting. [name_u]Rowan[/name_u] is my favorite but nickname [name_u]Finn[/name_u] and then the ending of [name_u]Rowan[/name_u] sounding the same kind of made me hesitate. I had personally thought [name_f]Isla[/name_f] sounded best with it.
What do you think of [name_u]Wren[/name_u] with [name_u]Finley[/name_u]? Does it sound okay?
I like them all apart from maybe [name_u]Finley[/name_u] and [name_u]Rowan[/name_u]. Whilst I like [name_u]Rowan[/name_u] on a girl, two unisex names together on different genders gets a bit confusing imo.
[name_u]Love[/name_u] [name_f]Raina[/name_f] with [name_u]Finley[/name_u]