#4 AJ Styles
Speaking of stars from WWE SmackDown, it would be a missed opportunity if AJ Styles wasn't mentioned in this feature.
AJ Styles is renowned for making anyone look good inside a WWE ring, and pitting Dominik Mysterio against The Phenomenal One would be a good stepping stone for Rey Mysterio's son and he can learn a lot from the veteran as well.
Sure, Dominik has proved that he has what it takes to be a WWE superstar at SummerSlam, but let's keep in mind that his bout against Seth Rollins was a Street Fight, which is a good way to mask in-ring weaknesses for a rookie.
Dominik Mysterio can do some impressive things inside the ring, but at the end of the day, it's good in-ring storytelling which separates good wrestlers from the best ones.
AJ Styles just happens to be an expert in-ring storyteller and even in terms of character traits, Styles vs. Dominik would be a good heel vs. babyface feud.
The Phenomenal One's heel character is that of a pompous talent who thinks he is the best living WWE performer on the planet, and to put him against a talent who has only wrestled once inside a WWE ring is definitely a promising idea.