After looking at this image for a moment, I've come to realize who is who:
1. Reimu is Yoshika 2. Marisa is Perrine 3. Youmu is Sakamoto 4. Sakuya is Minna 5. Reisen is Lynette 6. Yuuka is Barkhorn (fitting, very fitting) 7. Aya is Erica 8. Alice is Sanya 9. Sanae is Eila 10. Cirno is Lucchini 11. Yuugi is Shirley (also fitting, due to Yuuka being the representation of the Barkhorn of the group)