Top-Down: With the arms, and the back arm in particular, as in the case of Bat Drag.
Bottom-Up: With the hips, as Ted Williams advocated and I call Rotational Hitting.
...there are two ways to throw.
I this piece I discuss the two very different movement patterns that I tend to see in throwers and pitchers and why, in my experience, so-called "high-level throwing" instruction so often leads to the throwing equivalent of Bat Drag.