I would go with distinct names that do not start with the same letter. However I would make sure they are similar in style. For example I would not do Eleanor and Makayla or Hazel and Reagan for example.
I LOVE Mathilda - it's one of my latest favorites. I know a second grader with that name and it's adorable.
For me Eleanor and Eliza are super matchy and too cutesy together if you want to avoid that sort of thing.
Also, if the twins are identical I'd root even harder for very seperate names.
I LOVE Mathilda - it's one of my latest favorites. I know a second grader with that name and it's adorable.
For me Eleanor and Eliza are super matchy and too cutesy together if you want to avoid that sort of thing.
Also, if the twins are identical I'd root even harder for very seperate names.

It just doesn't seem to have the "commonness" that Eleanor and Violet have. Yes, they're old... but Eleanor & Violet seem to be much more recognizable than Cordelia is.
We've got plenty of time to come up with a second name and I'm sure we'll find something that we like... just nothing from the social security index of popular names is standing out to me. The 2 names we have so far (DD and one of the babies') were both popular in the 1910s so I want to stick around that era for the 3rd name. So feel free to throw out some ideas!!