I really like this name, it's lovely. I've seen it on adults, such as Aussie actress
Poppy Montgomery and
Poppy King (I think that's her name!) the cosmetics lady and it works just fine, no worries.
I like all the combos you had, with the exception of
Poppy Eleanor.
My fave combo would be either
Poppy Evelyn or
Poppy Madeleine. I like both and can't decide which I like better!
Great sib sets, I love:
Poppy &
MiloPoppy &
JasperPoppy &
Felix
Poppy &
GracePoppy &
Ruby