I’m not all that familiar with Elyra although I prefer it over [name_f]Elowyn[/name_f] with the siblings in this case.
[name_f][/name_f]This is how I would order your list:
[name_f][/name_f][name_f]Elora[/name_f]
[name_f][/name_f][name_f]Eliora[/name_f]
[name_f][/name_f]Elyra
[name_f][/name_f][name_f]Elowyn[/name_f]
[name_f]My[/name_f] personal favorite outside of this set would have to be [name_f]Elowyn[/name_f], but I think with your other kiddos’ I’d have to vote for [name_f]Elora[/name_f]! I like the pattern of the -a’s 
I do really like Elyra with your sib set 
[name_f][/name_f] how pretty!
I’d prefer [name_f]Elowyn[/name_f] over Elyra, which has pretty much the same issues as [name_f]Elora[/name_f] or [name_f]Eliora[/name_f].
I think it’s really pretty and it’s almost a mid way where as I said [name_f]Elora[/name_f] feels more euro and pirncessy, while [name_f]Elowen[/name_f], more enchanted forest. Elyra is a little of both. I like all names. But Elyra def has something very appealing about it…
They are gorgeous!
[name_f][/name_f]However I think your daughter’s having a name ending with an ‘a’ really appeals to you so I would go [name_f]Elora[/name_f] she’s such a beautiful name with a natural sunny disposition. I love the meaning of this name and I think she’s gorgeous within your sibling set.
I like [name_f]Eliora[/name_f] best myself, but I like [name_f]Elora[/name_f] best with your other kiddos!
Thank you!
Thank you 
Thank you so much
I do love the a’s. Thank you
Thank you for all of your help
I feel like this gets harder with each child. Thank you so much for your input
The meaning is definitely my favorite of the options. Thank you!
[name_f]Elowyn[/name_f] is beautiful and works perfectly
[name_f]Elowyn[/name_f] [name_f]Ophelia[/name_f] is beautiful!