[name_f]Olive[/name_f] [name_u]Juniper[/name_u]
[name_f]Willow[/name_f] [name_f]Penelope[/name_f]
[name_f]Violet[/name_f] [name_f]Clementine[/name_f]
What DOESN’T work?
I definitely think it works, they’re all nature-y types of names with long middles, I think they sound great together.
Yes, they sound nice together. I love [name_f]Olive[/name_f]!
I really dislike [name_f]Olive[/name_f], so that one stands out as not belonging.
I think they’re all great together, the only thing I would change is [name_f]Penelope[/name_f].
They work really well, my only issue is that [name_f]Olive[/name_f] and [name_f]Violet[/name_f] are vintage choices, and [name_f]Willow[/name_f] is not, so I feel like [name_f]Iris[/name_f], [name_f]Ivy[/name_f] or [name_f]Hazel[/name_f] might work better, but regardless, they’re very nice combinations together 
Personally I don’t like the combos but with just first names I think they work great together if you’re going for a nature theme
Id probably change [name_f]Penelope[/name_f] but that’s it.
I guess in theory they all work because it’s like a theme sibset.
I find [name_f]Olive[/name_f] really ‘celeb-baby’ hipster trendy and the other two are very classic and sweet.
For that reason, I’d substitute [name_f]Olive[/name_f] with another nature name like [name_f]Briar[/name_f], [name_u]Brooke[/name_u], [name_f]Flora[/name_f], or a [name_f]Rose[/name_f] name ([name_f]Rosamund[/name_f], [name_f]Rosalie[/name_f], [name_f]Rosa[/name_f]).