I love a lot of those names but Rosalie is definitely my favorite of the bunch, it's beautiful!
Felicity is my favorite.
Felicity would have to be my absolute favorite from your list!
Felicity! I never meet any little girls with this name, but I adore it.
a) Elsie - Vintage cute
b) Bryony - I have an irrational dislike of Br- names on girls, for some reason.
c) Felicity - A bit frilly for my taste
d) Delaney - Too surnamey for me, sorry.
e) Hollie - Like, but prefer the Holly spelling
f) Maggie - My favourite of your list, beautiful
g) Rosalie - Like this too but prefer just Rosa
h) Gracie - Like Grace nn Gracie but it's a bit too nicknamey to put on the BC.
i) Darby - Never heard this before but not keen, prefer Darcy
j) Hadley - Only ever heard this on a boy, sorry.