Since the meta Is wide open, I'm gonna attempt to guess on the top performers from each faction as opposed to picking an outright winner.
REBEL: rebels lists took a blow to their usual pancakey dominance with the shift in MOV scoring, however these ships still win games. Look for a dash list to feature prominently, as he can combine a great dial, high pilot skill and the best turret in the game. Flanked by 2 TLT y-wings to cover the donut sounds about right.
EMPIRE: with the release of the raider and subsequent return of Darth Vader to the forefront of the game, the heavy favorite to win worlds is some version of palpy and 2 aces. The list does have its weaknesses though. Vader is the weak link in the attack, and often times a third of the list is out of the fight. 100 points usually beats 71 points with regularity. look for Kenkirk/palpy and whisper to make a strong showing. That's my pick for top empire list.
SCUM:the new kid on the block, scum quickly jumped into the fold and established themselves as contenders with many tricks up their collective sleeves/servos. Brobots is the go-to, but I think that a mixture of strong small ships mixed in with some TLT y-wings, or a torkil to give your other ships a sharp advantage. Sadly, no one will win worlds with generic starvipers.