#2 All three!
Shayna Baszler has two of the Four Horsewomen by her side, every time she competes. Ronda Rousey plays a babyface so she doesn't really fit into this equation. But Marina Shafir and Jessamyn Duke certainly do seem all set to take NXT by storm soon.
Without going into any spoilers for now, Kairi Sane, Io Shirai and the beautiful Dakota Kai seem to have formed a sort of alliance. The three women challenged the three heels to a fight, down the line. It does seem like Duke and Shafir will be stepping into the ring very soon indeed.
This effectively means that we are one step closer to the dream Four Horsewomen vs. Four Horsewomen match that we all wanted to see. When and where it will happen is anyone's guess.