I'm not surprised that Argentina is in the lead, after all, champion of the world and champion of America, this team has been winning all the important football titles, and if Argentina played in the EURO they would probably win too... Even though France and Spain are doing well in the rankings, they still have to win championships.
Argentina's success is due to having a united team that supports and respects each other. Messi is a successful team leader, usually he is calm but since 2018 he has started to be a little more assertive in defending his friends, and his friends really respect Messi's leadership, they do anything for Messi. Argentina's other success lies in the coach, because so far Argentina has never lacked great players, it has been proven that in Scaloni's hands Argentina can achieve everything, even a great coach like Ancelotti also praised Scaloni.
So if you look at the upcoming world cup, with the performance that Argentina currently has. Argentina might be able to win the 2026 World Cup in America because the chances of a European country winning the world cup if it is held on the American continent is very small.