Chelsea fits in that 4th position more, Villa are currently in a good form also but Maresca seem a little further in terms of delivering major performance to hold that position. Chelsea are not coming for the title this season, they are not yet up to that level even Maresca said so, but next season, undoubtedly we might get to see Chelsea in the top 3
competing for the title.
Chelsea's main aim this season is not to compete for the title, Enzo Maresca is having good terms in Chelsea based on his current performance, and will be aiming to make it back to the Champions League next season because based on current standings in the premier league table, Chelsea and Aston Villa have the same points and both of them looks like they can maintain the position, but according to the effort Uni Emrey of Aston Villa is putting, his team looks good just as Chelsea is, therefore, the fourth position for now belongs any of them since Manchester United, and Tottenham are yet to prove themselves this season.
These season is currently for City and Arsenal, Liverpool has the option of 2nd place or third place but not just for the title because i see Arsenal as a much stronger contender. City are not too healthy in the league, their performance has been below expectations and meaning anything can be possible to favor Arsenal except they come back to their best performance.
Liverpool can be very serious to also win the league because Arne Slot is doing his best even though he said that he is yet to play against the big teams, that he can ony be sure of his team's position after playing against the big teams in Premier league. Arsenal has started the run again this season, they look more stronger and have more game maturity than last season, I think if they have consistency, they can do it this season.