Neither of the three listed really....have to say more like "hillbilly". I don't really brew from set recipes but from experience on basic equipment. It's very easy and produces nice beer in the style I like...mostly APA's and IPA's.
But, I am a licensed engineer by trade, a chef or at least a decent cook by necessity, and a scientist by nature, so perhaps that allows me to pull off the hillbilly brewer attitude.
Water calculator....bah, I mash in a "reasonable" volume, and sparge to fill the kettle, and boil to finished volume. An ounce of hops is a scant handful, I've checked on a triple beam scale...i'm darn close fwiw.