I agree, There is still a long time to begins World Cup. Many things can be happen and will change during this time.
Actually it seems to me there are few groups which have more potentiality to get the World cup 2022. In my opinion, we will get the winning team of 2022 from Group C, Group E, Group G and Group H. Specifically, Argentina, Spain, Germany, Brazil and Portugal are very promising.
Along with the countries you have listed, I would add Belgium and France as well. I would rate them ahead of Portugal, because the latter is entirely dependent on one player. For me, Argentina and Brazil are having the maximum chances, but some of the UEFA nations are quite capable as well. But then, international football is very unpredictable. Who in their wildest dreams might have thought that Croatia would reach the final of 2018 World Cup? It will be real fun, if such a lower ranked team manages to reach the finals this time.
It is not impossible, it is possible that the mentioned team must be eliminated in the group phase. And the dark horse team drove unexpectedly, in fact this is what I look forward to at every biggest football party. Where countries that are not too favorites can talk a lot here. This is something that might happen in the current edition of the World Cup.