Blend, Gradient, Steps... whatever you call them, they're fun to make and to look at. I tried to organize them as best possible, but it honestly is difficult to categorize these things. First we have blends where all the colors are in pretty much the same hue. Then blends to black or gray. Analogous blends are of colors that are near each other on the color wheel and I threw the rest in complementary blends as they, for the most part have colors across the color wheel from each other.
Did I miss any of your favorites? Share them in the comments below.