Hey there BKC, here's a video idea I thought you might like to add to the pile -
I always hear about how Tyranitar is "good despite it's typing, not because of it," but I wonder sometimes if that's really true, for example if it lost its dark type it wouldn't be as good of a pursuit user, if it lost its rock type in favor of, say, ground, it wouldn't have the sp.def. buff in gens past 3...
(jk of course it's the same guy obviously)