2 types of speedrunners

I'm here to type about how I approach speedrunning a new game. Doing 12 Hour Challenge last weekend alongside Millnium showed me that there are two kinds of speedrunners.

The first speedrunner (Mill) grinds practice and strats, sometimes with savestates. He'll do them well, and then do runs when he understands all of the fast strats. It will take a while to get a good run because he uses all the best/fastest strats available.

The second speedrunner (Lack) plays through the game to get a feel, getting "better at the game" simply by playing it over and over. May be reluctant to learn strats at first, but will introduce them throughout his playthroughs. Lack will most likely be better at backup strats when the fast strats go wrong.

Mill will not have great times early on, but it will click eventually and he'll get great times. Lack will see big improvement and will have better times than Mill, but only for a short while. Mill will pass him up when all of the hard strats fall into place, as Lack has to incorporate the tougher strats into his run.

Seeing the two approaches was really interesting. I like to see the whole picture and fit in the great parts once I understand it. Mill (as I speak for him) likes to learn the intricate details and build it into something great. This is evident in our recent ventures in SM64 and Pop'n, as you can see our improvement (although I'm way less experienced in SM64).

Which one are you and why? Is there a third type I don't see? Is this way off? Thanks for reading.