And would you use a first name ending in A in a combo with [name_f]Morgana[/name_f] as a middle name?
Examples,
[name_f]Sara[/name_f] [name_f]Morgana[/name_f]
[name_f]Lara[/name_f] [name_f]Morgana[/name_f]
[name_f]Emilia[/name_f] [name_f]Morgana[/name_f]
or would a name like [name_f]Emmeline[/name_f] [name_f]Morgana[/name_f] flow better?
[name_f]Morgana[/name_f] is lovely! I prefer it to [name_u]Morgan[/name_u] on a girl, personally.
I think [name_f]Emilia[/name_f] [name_f]Morgana[/name_f] would work fine, as there aren’t any other prominent ‘a’-sounds in [name_f]Emilia[/name_f], whereas [name_f]Sara[/name_f] and [name_f]Lara[/name_f] both have the repeated ‘a’ that [name_f]Morgana[/name_f] has. I don’t think the others are completely unusable, though.
[name_f]Emmeline[/name_f] [name_f]Morgana[/name_f] is pretty, I like it. Does flow a tiny bit better than the others imo.
I agree that [name_f]Emilia[/name_f] flows better than [name_f]Sara[/name_f] and [name_f]Lara[/name_f], but [name_f]Emmeline[/name_f] works better than any of the others
[name_f]Morgana[/name_f] is strong and interesting.
[name_f]Emilia[/name_f] [name_f]Morgana[/name_f] and [name_f]Emmeline[/name_f] [name_f]Morgana[/name_f] are gorgeous
Loooove [name_f]Morgana[/name_f]! So strong and mystical 
I prefer [name_f]Emilia[/name_f] [name_f]Morgana[/name_f] or [name_f]Emmaline[/name_f] [name_f]Morgana[/name_f]
LOVE [name_f]Morgana[/name_f] so much!
From your options, I like [name_f]Lara[/name_f] [name_f]Morgana[/name_f] best. I feel like the names have good flow. [name_f]Emmeline[/name_f] works well too.
I prefer [name_u]Morgan[/name_u].
[name_f]Morgana[/name_f] reminds me of fata morgana, especially with a two syllable first name that ends in an a.
[name_f]Morgana[/name_f] is lovely. I much prefer it to [name_u]Morgan[/name_u]. [name_f]My[/name_f] favorite of yours is [name_f]Emmeline[/name_f] [name_f]Morgana[/name_f], just because I’m not a fan of firsts and middles ending in the same letter (but I definitely see the appeal!).
I knew a [name_f]Morgana[/name_f] who was absolutely gorgeous and an amazing violinist, so the name to me is just full of lovely music and whimsy 
I much prefer [name_u]Morgan[/name_u], but [name_f]Morgana[/name_f] is strong is refreshing. I also like [name_f]Morrigan[/name_f].
[name_f]Emilia[/name_f] [name_f]Morgana[/name_f] goes best with it. But [name_f]Emmeline[/name_f] [name_f]Morgana[/name_f] is even more beautiful.
It reminds me of Ursula’s sister in the little mermaid but I don’t really think that is a bad thing. I like the sound and look much better than [name_u]Morgan[/name_u]. I don’t mind both names ending in a
I love [name_f]Morgana[/name_f]! Very elegant and mystical. [name_f]Emmeline[/name_f] [name_f]Morgana[/name_f] flows the best out of the ones you said but with a name ending with a it would depend on the name.
[name_f]Zillah[/name_f] [name_f]Morgana[/name_f]
[name_f]Stella[/name_f] [name_f]Morgana[/name_f]
[name_f]Aretha[/name_f] [name_f]Morgana[/name_f]
[name_f]Elettra[/name_f] [name_f]Morgana[/name_f]
[name_f]Lucia[/name_f] [name_f]Morgana[/name_f]
[name_f]Octavia[/name_f] [name_f]Morgana[/name_f]
Magdelena [name_f]Morgana[/name_f]
[name_f]Petra[/name_f] [name_f]Morgana[/name_f]
[name_f]Viola[/name_f] [name_f]Morgana[/name_f]
[name_f]Cressida[/name_f] [name_f]Morgana[/name_f]