With all leagues have come to an end and only the Champions League final yet to play, I created some tables comparing goals and assists per nationality in the top-6 national leagues and the Champions League and Europa League. There is a prominent place for the countries from the CONMEBOL.
First an overview of all goals and assists per nationality in the top-6 European Leagues (according to the UEFA):
Here a visual map: public.tableau.com/profile/publish/Nationalitiespergoal/Sheet2#!/publish-confirm
In the following table you find the 10 nationalities with the highest goals per 90 minutes average in the 2 European competitions (Champions League and Europa League). Only nationalities that have scored a combined 10+ goals are considered:
Making the same table for the top-6 European Leagues (according to the UEFA) we also see Colombia as main distributor of goals per player.
Adding assists to the table:
Note: all data that has been used comes from DataFactory