Maybe comparing between players is not very appropriate, because these players have different characteristics and also as you mentioned different playing positions so that they give different results, also which club they play for is very decisive.
They are not different players but belong to different generations. 20 years are enough to have big difference in medical care, nutritious therapy, training and more support things for players. Those factors can help young players like Haaland, Mbappe have more advantages than what Messi, Ronaldo, Ibrahimovic had 20 to 25 years ago. It can help them to play better, have better physical body and have a longer play lifespan.
Haaland still has a very long career at the age of 22, he can achieve many achievements when he remains consistent, and also when he can correctly choose the club where he will have a career, because it is possible that Haaland will look for other clubs and not only in the English Premier League to get more.
Haaland is playing in a time with different tactics trend like years ago. In addition, in the last few years, we see very little outstanding defenders like generation of Ferdinand, Terry, Nesta, Maldini, Canavaro, Thuram, Puyol ... and the lack of such defenders can benefit attacking players like Haaland and Mbappe.
I believe you knew about moments when Nesta blocked Messi attacking attempts years ago when Nesta was very old and only played very last matches in his career.