#8 Cedric Alexander
Despite lacking any great character or personality, the WWE have made a big deal of the former WWE Cruiserweight Champion coming to RAW, and that's due to his overwhelming talent as an in-ring performer. The former Cruiserweight Champion had a year long run of some of the best matches WWE has seen, and with so many new opponents awaiting him on RAW, there's no doubt that 2019 will be another big year for him.
Due to his size and limited personality, it's highly unlikely that Cedric will ever rise beyond the mid-card, but that's still a great position to be in within WWE. How quickly Alexander wins gold on Monday Night RAW most likely depends on how they see other mid card talents such as Ricochet, Cesaro, EC3, Bray Wyatt, The Miz and others, but with all of those great opponents, Cedric will get the crowd on his side and will no doubt claim gold in 2019.