I got this response to a similar question on another site:
I take it you mean professional scientists/philosophers. A very famous one was Cambridge astronomer Sir Fred Hoyle. Hoyle - whom many (most?) astronomers agree should really have been awarded the Nobel Prize - rejected an evolutionary origin for life given the huge statistical and scientific odds against it, but he didn’t want to give up atheism, so he came up with the theory of “directed panspermia”, which posits that life on Earth was seeded by some alien life/civilization that lives somewhere else in the universe. (Of course this begs the question of how that lifeform evolved, but anyway... ;-> )
A professional philosopher who was a non-theist but who was also scathingly critical of Darwinism - because of its many illogical and contra-evidentiary assertions - was the late Dr. David Stove, author of the brilliant book Darwinian Fairytales. You can read some excerpts of his book at these links: So You Think You Are a Darwinian? and A New Religion. All sample articles, including some responses to Dr. Stove, are at the Royal institute of Philosophy site.
If by “creationist” you mean “biblical creationist” then “creationist, but is not a Christian” seems to me to be unlikely on the face of it as a final result, both logically and given the debates and information out there these days. I.e., there are all the other biblical claims one would be under intellectual pressure to accept once one accepted the Genesis creation account.
So I think in the long-run most who accept Genesis, as opposed to just religion-neutral Intelligent Design - would most likely end up becoming full-fledged Christians. But I’m sure there are a goodly number who, like C.S. Lewis at one point and possibly like Prof. Flew, are currently ‘on the way’ to full belief but at this time have only gotten as far as deism or theism.
Thanks for the interesting question!
Cheers!
GKC_fan
Interesting.