Going line by line
Robin
Batgirl and Huntress
Orphan, Batwoman and "Drake" ???
Nightwing and Red Hood
??? (No idea about the Red Mask, doesn't really look like Flamebird, maybe Katanas classic mask), Black Lightning, Batman, Signal, Katana
??? ??? (maybe an old Robin masks ?)
The major ones missing are Spoiler, Catwoman, Batwing and Azrael.