Your list:
Miriam
Petra
Clemence
Leonor [maybe Leonore/Leonora/Lenora?]
Scarlett [as a middle]
Josephine
Freya
Ingrid
Emmeline
Henry
Theodore
Gideon
Leopold
Felix
Robert
Charles
Arthur
Daniel
Benjamin
Adrian
Blaise
Sebastian
Callum
*
Possible combos:
Petra Clemence
Miriam Scarlett
Emmeline Freya
Lenora/Leonora Josephine
Theodore Gideon
Felix Benjamin
Adrian Robert
Arthur Sebastian