Pokémon Type Pairings have ZERO Consistency for When they Show Up...
Some Pokémon type combinations have been pretty constant, but some of them that we think of as "staples" have actually been YERAS since they were last introduced! But then on the other side, new typings from just one or two games ago go into overdrive and we see WAY too many too quickly, so how can we overcome the shocking lack of forethought in these Types to have it a little more steady...?