Juniper and Iris Siblings

What would be some sibling names for Juniper and Iris?
I was thinking kind of cool, hip names (almost hipster-like).
What names do you think?

My first thought was [name_u]River[/name_u] (unisex). Since both names are nature names, I might want to stick with the theme just so the third child wouldn’t be left out.

Girls:
[name_f]Acacia[/name_f]
[name_f]Lila[/name_f]
[name_f]Oceana[/name_f]
[name_f]Paloma[/name_f]
[name_u]Robin[/name_u]
[name_f]Sparrow[/name_f]
[name_f]Dahlia[/name_f]
[name_f]Calla[/name_f]
[name_f]Poppy[/name_f]
[name_f]Delphine[/name_f]
[name_f]Fleur[/name_f]
[name_f]Linnea[/name_f]

Boys:
[name_m]Archer[/name_m]
[name_m]Jasper[/name_m]
[name_m]Fletcher[/name_m]

Good luck!

[name_u]Juniper[/name_u], [name_f]Iris[/name_f], & _____?? =seems more hipster-like to me
[name_u]Phoenix[/name_u]*
[name_m]Quartz[/name_m]*
Parklin or [name_m]Park[/name_m]
[name_u]Larkin[/name_u] or [name_f]Lark[/name_f]
[name_u]Raven[/name_u]
[name_f]Hyacinth[/name_f]
[name_u]Jay[/name_u]
[name_u]August[/name_u] or Guster or [name_f]Asha/name_f as a nn
[name_u]Ivory[/name_u]*
[name_f]Ebony[/name_f]
[name_f]Aqua[/name_f]*
[name_f]Aura[/name_f]
[name_u]Oakley[/name_u], Oaklyn*, Oakland
[name_u]Grey[/name_u] or Graylin
[name_f]Cypress[/name_f]*
[name_u]Colby[/name_u]
[name_u]Bay[/name_u]

So far, I’m loving [name_m]Archer[/name_m] and really liking [name_f]Calla[/name_f], [name_f]Acacia[/name_f], and [name_f]Poppy[/name_f]!

[name_m]Benjamin[/name_m]
[name_m]Georg[/name_m]
[name_m]Frederick[/name_m]
[name_f]Gretel[/name_f]
[name_f]Louisa[/name_f]
[name_f]Olivia[/name_f]

[name_f]Hope[/name_f] it helped!
[name_f]Isadora[/name_f]

I immediately thought of [name_f]Daisy[/name_f] (but the girl would have to be pretty cool to be able to pull this name off - I only know one [name_f]Daisy[/name_f] and she’s extremely cool). Some other ideas:
[name_f]Poppy[/name_f]
[name_f]Bea[/name_f] ([name_f]Beatrice[/name_f])
[name_f]Laurel[/name_f]
Basically any flower name works!

Sticking with the nature theme:

[name_f]Willow[/name_f]
[name_f]Hazel[/name_f]
[name_f]Calla[/name_f]
[name_f]Ivy[/name_f]
[name_f]Delphine[/name_f]
[name_f]Saffron[/name_f]
[name_f]Clementine[/name_f]

I think all of those are pretty hipsterish as well.

In my head, I totally heard: [name_u]Juniper[/name_u], [name_f]Iris[/name_f] and [name_f]Phoebe[/name_f]!

I agree that you kinda need to stick with the nature/ word theme. The girls names are pretty well covered above. For boys:
[name_m]Cove[/name_m]
[name_u]Bay[/name_u]
[name_u]Ash[/name_u]
[name_m]Rye[/name_m]
[name_u]North[/name_u]
[name_u]Aspen[/name_u]
[name_u]Everest[/name_u]
Rook
[name_u]Blaise[/name_u]
[name_m]Wilder[/name_m]
[name_m]Jett[/name_m]
[name_u]Jem[/name_u]
[name_m]Stirling[/name_m]
[name_m]Arrow[/name_m]
[name_u]Yarrow[/name_u] (I prefer for a girl but…)
[name_m]Forest[/name_m]

[name_f]Iris[/name_f], [name_u]Juniper[/name_u] and [name_f]Daisy[/name_f]