I like
Jade. It's pretty and minimalist.
Megan is really common, which isn't something I usually like about names, but since you want something easily recognizable, I guess that'd be a positive factor? I think it'd be fine, if you want to use it.
I don't particularly like either
Maddy or
Maggie (they seem kind of cutesy to me), but I prefer
Maddy out of those two.