What about this set????

I think Adelaide or Adeline (I say it AD-duh-lyn) could be a great option. Addie is a very cute nickname and it avoids over-similarity while keeping a bit of it.

I think Emmeline, Cecelia, Seraphina, or Camellia (kuh-MEEL-ee-uh) could be other pretty, flowing options for you that are, in no way, similar to Ariella. I, honestly, love Camellia and it is such a pretty flower! Camellia Ryan is a great combination :)

Ariella and Aurelia are definitely too close. 

Lavinia Ryan

Selena Ryan

Emilia Ryan

Cornelia Ryan

Lucilla Ryan

Clarissa Ryan

Definitely too similar!What about Aurora, or a different name that would allow the nickname Lia? Like Amelia or Julia, or even just Leah? I would avoid any other A names that end in -ella or -elle, though.

Does it have to be an A name? I've never been a fan of matchy matchy names..or themes like naming all the kids with the same letter.  If they don't have to be an A, there are so many names that would work well with Ariella! Out of the names you listed, I like Amelia the best with Ariella...although I still think they are too similar.

I think the problem is that they both end with an "A", both have "L"s close to the end, and they both start with the "are" ish sound.  I think all the other "A" names you listed work better with Ariella.  I think Amelia, Angelika, and Ambrosia work especially well.  Are you set on keeping with the "A" names?  Because I think you'd have so many other choices if you don't stick to that letter...  What happened to Scarlett or Charlotte?  I think both are very pretty with Ariella.  or Emmeline?  Or Violet?  All very pretty with Ariella, imo...

I agree that they're way too similar; I think it would be confusing for people who don't know them well trying to keep straight who is who.

I think that Aurelia and Ariella are way to close..What do you think of Aviana? Ryan is so masculine for a girl is this a family name?

We cant use Arianna or Arabella because we have them in family already...  I also liked Anabelle, Anabella, Angelika, Adrianna, Amelia, Ambrosia, but i dont know

They are very very similar. I like Ariella better.

they are wayyy too similar. plus i like ariella way better

yeah they are almost the same. What about Arianna? it puts their names close but different enough they won't both look up when called.

Yes those two names are way too close...althought hey are both very beautiful.

Good Luck!