Easy, they're Manchester City, Arsenal, Liverpool and Manchester United.
Chelsea will not able to finish in the top four because Nkunku suffer long term injury and there are many players are currently injured too. I think it's already a big achievement if Chelsea can finish in 7th position because they're not that good.
West Ham, Newcastle, and Tottenham might look convincing, but they're not able to maintain their good performance for long term.
Its very early to use only round 3 match to predict where the teams and who will finish in the top of the league and I'm not sure why you did not included Tottenham Spur from your top 4, they hare ahead of Mahdester united by 1 point and currently sit on number 3 in the standing, the goals they have conceded in 3 of their matches is twice less than what Manchester United has conceded but you think 3 matches shows you the vision of top 4 standing, i don't agree with your call my friend.
Nkunku is not the only player why Chelsea will not make the top 4, a single player will not have so much effect to draw them back, the only problem of Chelsea is that they are yet to blend together, more than half of that squad are all new to the club, they are good or even if the result is not good now, they will do better with time. If Chelsea doesn't make the top 4, West Ham or Tottenham will make it because the two teams sold the face of the club(Kane and Rice) but their early matches shows confidence.
After a thrilling week, Liverpool will be Aston Villa this week. What they achieved against Newcastle should be more motivation for them in this match. Aston Villa is not an easy opponent for them to beat. They can win 2 wins and one defeat, and the defeat they achieved against Newcastle and they lost with a landslide score.
If we talk about logic, then Liverpool should be able to beat ASton Villa too because they can beat Newcastle. But football does not always prioritize logic, here there are things that we might not have expected before.
Van dijk will be absent from that match which makes them more vulnerable, he is one the best defenders that other club fear the most and will not be playing in this match. However, even if they have been having good winning streak, they lost to Newcastle that Liverpool beat in there last match, this could also be an advantage to boost confidence for Liverpool to trash them in the match, this is an easy win to get 3 points if Liverpool use it very well.