In Russia WC 2018, Mbappe outshone Messi and Ronaldo. Suarez and Cavani did get their team to the QF. Neymar disappointed.
Since then, at club level Ronaldo, Messi and Mbappe have performed outsstanding whereas Suarez has faded over the last two years and has scored half the goals in La Liga (2019/20 and in 2020/21) as compared to his beastly form in 2015/16 and in 2016/17.
Mbappe has scored most goals in the season so far as compared to Neymar, Salah, Benzema, Harry Kane or Haaland now. But surprisingly still trails the veterans like Lewandowski, Ronaldo and Messi.
I expect that in 2 years time, it will be Mbappe and Haaland as the superstars