In knitting there are subsets like any other grouping. Since it is my hobby/obsession I know more break downs of knitterly definition.
Yarns - acrylic vs natural or hand painted vs kettle dyed.
Tools - material make up - wood vs metal vs plastic vs anything else you can think of.
Technique - straight needles vs circulars, double pointed needles(DPN) vs magic loop, top down vs bottom up.
What you like to knit - socks, scarves, sweaters, mittens, cozies
Motivation - enjoy the process of knitting or the end result
Defining what type of knitter you are ranks up there with using your Starbucks order to define yourself. Grande, half caf, skim, light, cappicino vs Tall caramel latte. (Thank you "You've got mail" for that analogy.) Personally the way I like my coffee to have a hint of coffee flavor over the milk and sugar. Yeah I gave up sugar in my tea I will not sacrifice sugar in my coffee.
I am a top down, bamboo DPN wielding, wool sock knitting machine. I enjoy the process but love the results. I knit because I will have something to show for it in the end.
Hi my name is Yarnkettle, I'm a knitter. Just hand me some sticks and string and no one will get hurt.
That is part of the way I define myself.