14 Survivor aligned (Jack, Sawyer, Kate*, Sayid*, Desmond*, Mr Eko*, Jin*, Charlie, Claire, Boone*, Michael*, Walt, Locke, Sun, Shannon, Juliet, Anna, Libby) - I named 18, can't see anyone coming from outside that group unless Hogg was desperate to fit in Rose/Bernard or Vincent the dog.
The * are the ones who I'm pretty sure I know who they are based on the write ups/brief discussions. So with that in mind if we took a swing it would be close to a 50/50 shot.
3 Others Aligned (Ben, Tom, Richard or maybe that one eyed Russian dude)
2 Smoke Monster aligned (Smoke monster and whoever it recruited)
1 Indie (Polar Bear)
1 Island aligned (Hogg)
Brother