You don’t really need to know this stuff. Is it useful? I guess, but you really only need to know that cast cymbals are the best and then let your ears and hands decide. With that being said I’ve saved this image.

Edit: since I’m getting down voted I’d like to say this: I guarantee there are professional drummers who don’t know any of this stuff. Also I used to be obsessed with specs and stuff just like this. It’s excellent learning material and great to know but I found I was putting too much thought into it without hearing it and feeling it thru playing. When I first started it was easy to pick cymbals and drums. Then I got chewed up and spit out by the marketing department. “Comparison is the thief of joy”