#1 AJ Styles
AJ Styles had a fantastic build and eventual Boneyard Match with The Undertaker. The brawl was certainly befitting the occasion of WrestleMania but ever since he got "buried" by The Deadman, Styles does not seem to be having a sense of purpose in the WWE.
The Phenomenal One came back on the go-home show of RAW before Money in the Bank and qualified for the most unique iteration of the ladder match in WWE history. He seemed to have the briefcase in his grasp too, but eventually, it was won by Otis.
Now even during the Money in the Bank ladder match and on the RAW after the said PPV, Styles was seen feeling the aftereffects of his encounter with The Undertaker at WrestleMania. And while that makes for a hilarious spot or two, it does not do one of the best heels in WWE any favors.
Perhaps with the new inter-brand invitational matches, we might see Styles confront Otis for the Money in the Bank briefcase. After all, it was The Phenomenal One who got hold of the briefcase first before fumbling it. But that is also mere speculation as of now and until this actually becomes reality, we don't know what's next for Styles in the near future.