So the List revealed in this manga is everyone except Zeus, making it 12 Fighters. Zeus was round 2, Buddha betrayed the Gods for Humanity, and Hades was subbed in to fight Qin.
1 Thor
2 Zeus
3 Poseidon
4 Heracles
5 Shiva
6 Bishamonten/Zerofuku/Hajun
7 Hades
8 Beezlebub
9 Apollo
10 Susanoo
11...