I really hate
Mildred, but it ism't due to age or unfamiliarity. It just reminds me of Mildew. I like
Hildred, but
Mildred seems a more likely choice due to familiarity. Milbrey is neat, but a bit surnamey for me. It does sound like one that would come into fashion now.
Millicent is cute and also seems more likely to me, but I at least connect it with
Millicent Bullstrode in
Harry Potter, and I know many of my friends would as well and we are in the having kids phase of life.
I am 26 and in the USA.
~Anna~