Liverpool, Arsenal, City, these are all great teams and we have no idea how they will play until they end up playing. This is why we need to give it some time. By week 10 or so, you will see clearly which team is doing how. Obviously we can see before that too, but week 10 makes it guaranteed for everyone. At that point, only injuries change teams, otherwise they are what they are all year.
The Premier league is very competitive. There are a lot of good teams. Liverpool, manchester city , arsenal , chelsea and Newcastle are very strong teams. And I would say that every squad has the ability to dominate the Premier league.
You are right that we will not know which teams will fight for the title until the end of 10 weeks. Even to choose the top 3 teams for the title we will have to wait at least 15 weeks.
However last season we saw Liverpool's dominance in the Premier league from the beginning of the season. At the end of the season , Liverpool were 10 points ahead of arsenal who were in second place in the table. Hopefully we will not see that next season. The fight for the title next season will be even more intense.