#2 Female Superstar who could join SmackDown in the next few months - Io Shirai
A few things would need to happen for this to take place on SmackDown, but it isn't out of the realm of possibility. Io Shirai has had a dominant reign on NXT as the Women's Champion and it seems like she is ready to make the jump into the main roster
Shirai defeated both Ripley and Charlotte Flair to win the NXT Women's Championship at TakeOver: In Your House back in June 2020. That means she's working on a title reign of nearly 10 months. Depending on the plans around her upcoming match with Toni Storm, The Joshi Judas could drop her title to the former NXT UK Women's Champion. That could mean that promotion to the main roster could be in the future for the Genius of the Sky.
If the title does change hands, look for a possible main roster call-up for the Genius of the Sky. The possibility of Shirai feuding with the likes of Bayley, Sasha Banks, and Natalya is something that would excite the WWE Universe and she will be a major addition to SmackDown.