I don’t think there is any tradition to be found in that and if this would tell us anything, it’s that Croatia have got really good football players who then also happen to be in top tier clubs strong enough to win the Champions League trophy.
Yup, traditions isn't the key to be champions, UCL title not because of Croatian players on team, but how the team will be on the match. So far Man City become favorite because they are have good strategy under Guardiola also have balance players. If Inter Milan able to win this match, I don't its because of Croatian players traditions, but Man. City already made a mistake, no more.