Sparkplugs.com used to be just spark plugs but it seems in recent years, like most other companies, they continue to expand their offerings to sell/drop ship whatever they can. So it took some hunting but I found their spark plug brand deciphering page
Take a look at the various brands and how their alpha-numeric labeling breaks down into the specific details of each spark plug part number.
https://www.sparkplugs.com/learning-center/article/173/manufacturers-numbering-systems