Lillian Diana and Lillian Sarah and both very beautiful names. They're feminine and sophisticated and flow very nicely, also Lillian not a particularly common name, but it is common enough for people to be familiar with the spelling and pronunciation :)
I'm not too keen on Amelita, just because of it's peculiarity, it may be mispronounced. But Amelia is a nice name, and the nickname Millie is cute :)
I definitely prefer Hannah over Joanna and Gianna. Joanna's okay, but I don't like the nickname Jo on a girl at all. The only down side to Hannah, is that it is a very common name, but it is still pretty, and it works well with almost all surnames.
I think Emily Jane is nicer than Emily Dorothea, because Dorothea is a very outdated name and also slightly heavy for a middle name.
Audrey fits best with traditional or simple middle names, as it is consider a 'older' more traditional name itself, because most people think of Audrey Hepburn when they hear the name Audrey. So i think names such as Neveah, or names which have alternative spellings, or are just made up altogether would not flow nicely with the name Audrey. Personally I love the name Audrey, and i think it would be lovely with the middle names Grace, Eloise, Claire, Lucia, Elise, or any name that ended in elle (such as Adele, Rachelle, Isobel/Isabelle), but I particularly like Audrey Estelle.
So would you like to include the names Elizabeth and Emily in the name? If you wanted to still honour somebody named Elizabeth, but didn't want the name to be too long, you could use a form of Elizabeth, being Eliza, which i much prefer over Elizabeth. So if you liked this as an idea you could use names such as...
Emily Eliza Louise or Eliza Grace Emily or Eliza Anne Emily or Eliza Lilly Emily.
But if you really felt that it was essential to keep the name as Elizabeth, you could use names such as...
Elizabeth Emily Anne (I'm not a real fan of the name Elizabeth, but I actually really like this one) or Emily Elizabeth Grace or Emily Rose Elizabeth. I think that Elizabeth sounds much grander than Eliza, but they are both nice names :)
I definitely prefer Adele!! Adele is one of my favourite names ever! It is just so sophisticated and cultured, without sounding like a 'tryhard' name. For middle names for Adele, I like...
Adele Lilliana (Lilliana Adele is also very nice!)
Well names that remain fashionable and popular are usually names which are very overused, such as (Emily, Sarah and the like) but there are some that are more unique than others.
Some traditional names include (most of these names are popular, traditional = popular):
And some trendy/vintage names include:
I hope I helped! :) x