Hops is native far more areas than it is actually cultivated. Its a bit picky and truly thrives in certain climates. These native strains have traveled time and space, and a part of that journey has been natural and selective cross pollination of strains. Whether it be for agricultural defenses, or high oil contents the varieties all vary. It is quite common for recipes to involve multiple hops varieties because of their different tastes and aromas. In the choices leave a lifetime of possibilities.