I will not compare Haaland with Ronaldo because both are players with different game styles. Haaland is a pure striker whose job is only to put in the best position before getting the ball to score, so Haaland is not the same as Ronaldo.
This season is Haaland's first season in the Premier League with Manchester City, he has proven his quality as a striker but still has to prove that Manchester City can have great success with him. Haaland has won two titles in his first season, but he is still very likely to lead Manchester City to a treble if he wins the Champions League final in the next few days. This is something we are most looking forward to, especially since Manchester City are the favorites to win it.
Haaland is still quite young I think he will have a more stunning heyday in the coming seasons, I will not compare him with some other senior players like messi and ronaldo but I think Haaland will have comparisons that will strengthen him as a player best later. At the moment I think one of the things that sets him apart from other players is his goalscoring genius.
One of the things that amazed me about Haaland is that his strength is similar to that of Ibrahimovic, which is too difficult for other players to control his movements, making it easier for Haaland to react freely in front of the opponent's goal.