Let's start with how much I love Elliott. One of the greatest boy names ever. I can't name my kid Elliott Edward otherwise that would be a frontrunner for us. LOVE Elliott.
These are all gorgeous names. Seriously. I'm not a huge fan of Abigail bc that always turns into Abby which is just meh to me but that's just a personal preference. Certainly nothing wrong with it.
Maggie Lucille slays me. That is beyond precious. And she can use Margaret as a professional name when she's older. Julia and Helen are both on my girl list as well.
If I had to rank them (and only if you make me!): Julia, Helen, Margaret, Marie, Abigail.
Love all of them. You won't go wrong.