6 out of 10 countries have F-16’s
5 out of 10 have F-4’s
and a lot of other nations have around 3 nations having the same planes in top tier. I know That the U.S and Russia are probably the two biggest exporters of military equipment but top tier is just going to be Mig 29, Su-27, F-15, JAS39, and F-16’s with the lone F-4 of Germany. I know that everyone just wants to play the current meta planes but Air battles are going to be so sterile and boring with everyone just playing the same plane with a different roundel on it making it less appealing to want to play more than one nation.