Which girl name do you prefer for our [name]June[/name] baby?
Our other children are [name]Lillian[/name] [name]Hazel[/name], [name]Oliver[/name] [name]Luca[/name] & [name]Iris[/name] [name]Lucia[/name].
[name]Amelia[/name] [name]Hope[/name]
[name]Beatrix[/name]/[name]Beatrice[/name] [name]Hope[/name]
[name]Cecily[/name] [name]Hope[/name]
[name]Elodie[/name] [name]Hope[/name]
[name]Genevieve[/name] [name]Hope[/name]
[name]Violet[/name] [name]Hope[/name]
I like them all, but I [name]LOVE[/name] [name]Genevieve[/name] [name]Hope[/name]! I think it goes so well with the sibset, too.
I like [name]Cecily[/name] [name]Hope[/name] or [name]Beatrix[/name] [name]Hope[/name]
My favorite would be [name]Amelia[/name] [name]Hope[/name], close second [name]Elodie[/name] [name]Hope[/name].
[name]Bea[/name]! 
Oh my, what to choose? All of them are wonderful in their own way. I’m just going to give you the best sibling name that looks and sounds good with [name]Lilian[/name], [name]Oliver[/name] and [name]Iris[/name].
1 [name]Violet[/name] [name]Hope[/name] (continuing the nature theme)
2 [name]Cecily[/name] [name]Hope[/name] (I wrote them out on paper and this name really looks good with the three other names)
3 [name]Genevieve[/name] [name]Hope[/name] (this French and somewhat exotic sounding name would spice up your trio nicely)
I love [name]Amelia[/name] [name]Hope[/name] but it just doesn’t seem right for some reason. It has a different feel to it. I like [name]Elodie[/name] but it kind of has a similar sound as [name]Oliver[/name]. [name]Beatrix[/name] is ok but lacks a little spark.
My favorites in order:
[name]Amelia[/name] [name]Hope[/name]
[name]Elodie[/name] [name]Hope[/name]
[name]Beatrix[/name] [name]Hope[/name]
then big gap to:
[name]Genevieve[/name] [name]Hope[/name]
[name]Cecily[/name] [name]Hope[/name]
[name]Violet[/name] [name]Hope[/name]
My only concern is that [name]Beatrix[/name] may not go well with [name]Lilian[/name], [name]Oliver[/name] and [name]Iris[/name]. I would definitely nix [name]Violet[/name] since you already have a flower name in [name]Iris[/name]. Wait - does [name]Lilian[/name] go by [name]Lily[/name]?
[name]Lillian[/name] does go by [name]Lily[/name] but she is our angel daughter. So the sibset would really only be [name]Oliver[/name], [name]Iris[/name] & _______
Oh my! You really have some lovely choices here! My very favorite is [name]Cecily[/name] - I just [name]LOVE[/name] it! And I like how the meaning of ‘blind’ becomes much better when paired with [name]Hope[/name] - [name]Cecily[/name] [name]Hope[/name], ‘blind hope’. Beautiful!
So here are my favorites, in order:
[name]Lillian[/name], [name]Oliver[/name], [name]Iris[/name] & [name]Cecily[/name]
[name]Lillian[/name], [name]Oliver[/name], [name]Iris[/name] & [name]Genevieve[/name]
[name]Lillian[/name], [name]Oliver[/name], [name]Iris[/name] & [name]Elodie[/name]
[name]Lillian[/name], [name]Oliver[/name], [name]Iris[/name] & [name]Amelia[/name]
[name]Hope[/name] that’s helpful!
[name]Amelia[/name], [name]Cecily[/name], and [name]Beatrix[/name] go best with your kids names imo.
[name]Angel[/name] daughter - what a lovely way to put it.
I think it’s important to decide if you want 3 flower names or not. [name]Lily[/name] and [name]Iris[/name] are both so strongly themed flower names, is it important to you to have another flower name, or is it equally important NOT to “start” a trend (since as you say, the sibsit is only [name]Oliver[/name] and [name]Iris[/name] in everyday).
I still vote for [name]Amelia[/name] as my favorite, followed by [name]Elodie[/name].
[name]Violet[/name] [name]Hope[/name], [name]Amelia[/name] [name]Hope[/name] or [name]Elodie[/name] [name]Hope[/name] are my fav.
I really like [name]Violet[/name] or [name]Beatrix[/name].
I think [name]June[/name] would be a very cute middle name. [name]Just[/name] throwing that out there!
[name]Amelia[/name] [name]Hope[/name]
[name]Beatrix[/name]/[name]Beatrice[/name] [name]Hope[/name]
[name]Cecily[/name] [name]Hope[/name]
[name]Elodie[/name] [name]Hope[/name]
[name]Genevieve[/name] [name]Hope[/name]
[name]Violet[/name] [name]Hope[/name]
My favorites are [name]Amelia[/name], [name]Beatrice[/name], and [name]Cecily[/name]. They have the best flow when it comes to [name]Hope[/name] as a mn. But honestly, all the first names are lovely!
My favorite names are [name]Genevieve[/name], [name]Elodie[/name], and [name]Cecily[/name], respectively. But I think [name]Cecily[/name] has the best ring with [name]Hope[/name] out of all 6, by far. I’m in the “don’t care about sibsets as long as no one’s name sounds too much like another’s” camp, so I have no commentary about that.
As much as I love [name]Violet[/name], since you have an [name]Iris[/name] and a [name]Lillian[/name] I would steer away from another flower name so you won’t be stuck in a rut in case of future kids. My top 2 names are [name]Cecily[/name] and [name]Elodie[/name], but I vote for [name]Cecily[/name] [name]Hope[/name]. 
Honestly, I think [name]Violet[/name] would be way too themey. Right now you can get away with it because the plants are sort of hidden in [name]Lillian[/name] and [name]Oliver[/name], but I don’t think anyone could miss [name]LILLIan[/name], [name]OLIVEr[/name], [name]Iris[/name], and [name]Violet[/name], and honestly I think it’s a little cheesey. I’ve never been a huge [name]Beatrix[/name] fan, but I [name]LOVE[/name] [name]Amelia[/name], [name]Cecily[/name], [name]Elodie[/name], and [name]Genevieve[/name]. Any of those would be fantastic. I think [name]Genevieve[/name] is my favorite with your other children’s names.