#4. Ali

Ali's move to SmackDown from 205 Live was nothing short of a dream. He went on to impress the WWE Universe with his pace and accuracy. However, a string of injuries kept him from capitalising on major opportunities, which included a shot at the WWE Championship.
This year alone, Ali was eliminated from Royal Rumble by Nia Jax, forced to miss the Elimination Chamber match and was also robbed of the chance of winning the Money in the Bank match due to Brock Lesnar's interference.
Thus, it will be fair to give Ali a shot at the US Championship. Both him and Ricochet can make for impressive bookings on Monday Nights owing to the wild card. Additionally, their in-ring chemistry seemed promising during their MITB encounter.
Both Ali and Ricochet are fresh babyfaces which will split the WWE Universe into two groups of supporters, thereby keeping the viewers invested in their title feud.