Just some commentary on the above:
Laken is just odd. Why not call your child table?
Lorelei agree that there is a huge fascination with it in Germany, probably one of the most famous legends. But she committed suicide, she is a siren rather not in my view
Cosima, Alexa, Xenia -- very posh, aristo, but beautiful.
Have not heard of other Maxima than the Dutch Princess
Marie-Therese, Louisa, Victoria, Letizia, Sophie/Marie-Sophie -- all very upper-mc, beautiful, albeit slightly popular(grossbuergerlich as Blauer says correctly)
Heidi, Liesl, Gretl, etc in their unabbreviated form (Heidemarie, Anneliese, Margarethe) beautiful and used in the generation of the now 60 year olds; all very "Sound of Music"/30s and 40s don't think anyone in Germany would use them unless there is a family/special reason affiliation; the abbreviations IMHO are not real names, I would always go for the "proper" name in the birth register
and then of course the really popular German names such as Lena, Lisa, Leonie, Lea, Anna, Mia, Hanna
My personal favourites are slightly more traditional:
Henriette
Eleonore
Cosima
Charlotte
Johanna