#5 Sasha Banks and Bayley
Sasha Banks and Bayley are a viable tag team right now, but given their history, they could be considered somewhat bipolar.
The former Women's Champions were attacking each other in the backstage area a few weeks ago before Sasha saved Bayley from an attack last week and the couple was then hugging in the ring again this week.
It is unknown where the storyline with Banks and Bayley is heading right now, but it would be perfect for them to be another addition to the Women's Tag Team picture, since there aren't many teams that are working together on the roster right now, so this would give them a distinctive advantage.