Flat set
scent post
toy set
blind set
dirt hole
Most of my sets are some variation of a flat set. My scent post sets, I don't call scent posts, but a pee post or gland lure and urine. The post is usually something natural, whether a small bush, old stump, rock, snow hump, or simply a pile of coyote, wolf, or dog crap with urine shot on it and possibly gland lure. The only "toy" sets I make are using a bone, most often a t-bone as a attractor and backing. Everything except a pee post I generally call a flat set, and pee posts and variations of flat sets make up at least 80% of my sets. Blind sets I only make in the snow, where they can be very effective, have a good chance of picking up a wary old canine. Dirt holes are something I just don't make that often. I throw one in now and then as a changeup, and they catch stuff, I just figure almost everything I can catch in a dirthole I can catch in a flat set and they are more likely to be wary of a dirthole. Also I'm often trapping in frozen ground where digging is a pain, or in rocks, or in snow. So it is easier to make a flat set or pee post.
Caught a pair of adult coyotes today, and the male was about as big as I've come across here. He was caught in a flat set/scent post with a pile of coyote crap (some old and already there, added to with a turd squeezed out of a coyote caught the day I made the set) with gland lure and urine. The female was caught 50 yards away in a flat set with a cowpie backing and some Violater 7 under it.