So this is the rough idea - because Young Earth Creationism (YEC) buys what they call mirco evolution, there is some overlap with evolution. I guess Old Earth Creationism (OEC) gets a bit more overlap, since it buys an old earth, and ID gets even more, since it buys the mechanisms, and even the general idea of evolution. But all brands of creationism ignore the discoveries of science in favor of their interpretation of the Bible.Here are a couple of quotes I pulled off of the Wikipedia article on ID
Dembski: "Intelligent design is just the Logos theology of John's Gospel restated in the idiom of information theory," Touchstone Magazine. Volume 12, Issue4: July/August, 1999
Johnson: "I have built an intellectual movement in the universities and churches that we call The Wedge, which is devoted to scholarship and writing that furthers this program of questioning the materialistic basis of science."..."Now the way that I see the logic of our movement going is like this. The first thing you understand is that the Darwinian theory isn't true. It's falsified by all of the evidence and the logic is terrible. When you realize that, the next question that occurs to you is, well, where might you get the truth?"..."I start with John 1:1. In the beginning was the word. In the beginning was intelligence, purpose, and wisdom. The Bible had that right. And the materialist scientists are deluding themselves." Johnson 1999. Reclaiming America for Christ Conference. How the Evolution Debate Can Be Won
I think the answer is yes - ID is an approach to creationism that does not talk about God, evidently in the hopes that it could then be taught in schools.
Of course, some will object that evolution only knows about natural processes - in which case there could be no overlap at all with creationism. So for the sake of the clarity, evolution is only about natural causes, and the overlap is the parts of evolution even creationists grant - no implication that evolution recognizes supernatural causes.
Why does it matter? Because creationism starts from the view that how they read the Bible takes precedence over what we learn about the natural world via science. I am not talking about issues like the existence of God or the meaning of life - those are beyond science, and science cannot prove anything about these subjects one way or the other. Science has made a convincing case for an old earth, common descent, and natural processes at work in the world, resulting in what we see around us.
This poses some challenges for people of faith - but the right response is to face those challenges, not to pretend that science does not exist, or that by claiming something is true, that makes it so.