I prefer
Seraphina to
Sophia. I also prefer
Sophie to
Sophia.
Seraphine is beautiful too, and
Serafina is fine, as a variant. I dislike
Sofia and
Sofie, as spellings.
Sophia and
Sophie look more stylish, to me.
Sylvie,
Sylvia,
Silvia and
Sonia are all wonderful, and I see them as similar in style - also
Sarah,
Sadie,
Sally and
Sallie.