Brother or Sister for Wilder and Dashiell

What would a sibling to [name_u]Wilder[/name_u] and [name_m]Dashiell[/name_m] would be called?

wilder, dashiell, and…

brothers :kite:
finn
bodhi
shepherd, “shep”
mason
ezra
forest
leo

sisters :watermelon:
oakley
collins
eden
poppy
shiloh
blossom

[name_u]Linden[/name_u]!

I prefer this spelling for a girl and [name_u]Lindon[/name_u] for boy. Also I really like [name_m]Lachlan[/name_m] as a brother for [name_u]Wilder[/name_u] and [name_m]Dashiell[/name_m].

[name_u]Wilder[/name_u], [name_m]Dashiell[/name_m], & [name_u]Linden[/name_u]
[name_u]Wilder[/name_u], [name_m]Dashiell[/name_m], & [name_u]Lindon[/name_u]
[name_u]Wilder[/name_u], [name_m]Dashiell[/name_m], & [name_m]Lachlan[/name_m]

[name_u]Wilder[/name_u], [name_m]Dashiell[/name_m] and…

[name_u]August[/name_u]
[name_u]Everett[/name_u]
[name_u]Jude[/name_u]
[name_u]Ezra[/name_u]
[name_u]Shiloh[/name_u]
[name_u]Thaddeus[/name_u]
[name_u]Flynn[/name_u]
[name_u]River[/name_u]

[name_u]River[/name_u] or [name_f]Astrid[/name_f].