The kind of thing leafly wont tell you.
After alcohol i hardly dream. But i wake up with harder hardons.
After weed i sleep more easily, but dreams are harder to remember, and more vague/nebulous like lainon pointed out earlier.
After ecstasy sleeping is hard, but once the amphetamine component is off, the md component gives me cute, tender dreams, often sexual and generally physical. The hug-the-pillow type.