He already said Simonelli was not in the photo, although he agreed with the resemblance that number four shared with him. I don't see Adduci being one of the guys, either. I like the bald guy to be Cerone but the vibe I got from Fosco was that he wasn't a "definite".
As for Blasi, sorry, I don't share your assessment on his resemblance to number 10. Blasi didn't have that much white in his hair in the fifties, plus the ears are different:
