These incredible Lotto templates

Template designs is a usual thing in football. For example, let’s take 2014. Everyone from Metalurg to Hamburg and Cardiff wore the same red Adizero shirt. But 20 years ago basic shirts were so much stylish! I always thinked that Fiorentina had unique design of their vintage Lotto shirts. I should say that I made a big, very big mistake, because... 
 
...this design was a standard for Lotto shirts in the early 90’s. 
 
In addition. Could anyone explain why there are 7 years between the same designed Fiorentina and Delemont shirts?! A definite season of Swiss team is unknown, but we can think that it’s from 1998 or 1999 because on red Swiss patch was applied on kits only from 1998. Were there any similar examples of gaps in the age of shirts with the same patterns? 
 
Hope you enjoy this violet combination :)