Well, honestly in Bundesliga and Ligue 1, apart from Bayern Munich, Dortmund mainly and PSG +/- Lens and Marseille, the other teams are quite normal although their big names and the name of the players they have.
I don't think that you fully understand the current gap between Saudi league and Budesliga/Ligue 1. Former is ranked somewhere between 50-60 strongest league, which is equivalent of German 3rd league and for that kind of league to come into top 5 you would need an insane amount of money, especially in the country that is not known by its rich football history. Also keep in mind that they don't produce their own quality players (unlike Bundesliga and Ligue 1) which is another big problem.
The Saudi League is more like a show league. They don't seem like they aim to increase the quality of the league much more by starting to grow big names from their youth setup. The only thing they aim is to maintain this show by bringing mostly old stars to make supporters happy. They have oil money and they can easily make way better offers than a European team. This is all about the Saudi League.
Manchester City are preparing to improve their last bid for Gvardiol which was 75 million euros and some bonuses as well. Leipzig insist on demanding at least 100 million euros. I don't expect Manchester City to give up on this transfer because Guardiola wants to see him in his team so much.
The Saudi Arabia league is not third none 10th in the world yet, but the progress their making it obvious they will be top five in four years to come except you're not observing well and following up. this big stars that's in the league already will encouraged the young stars to believe that their dream in football are real. the younger stars will be notice now globally because for the rapid changes in the league. no body should predict the Saudi Arabia league wrongly, they are making a progressive moves. first was to sign Ronaldo to bring global attention to the league, Today every players wants to consider it. and more sponsors are already in the league.