Mostly just those from the subset of Christianity called "Fundamentalism" [0], which was founded around a hundred years ago as a reaction (IMO, an overreaction) to "Liberal Christianity" [1]. It's worth reading up on the history of those movements to get a clear understanding of where the modern move toward strong literalism originated.
You may also find it worthwhile to read Origen's De Principiis, particularly book IV sections 16-22 [2], and Augustine's On the Literal Interpretation of Genesis, particularly chapter 19 [3]. I've found a number of very early Christian scholars tend to treat certain sections of the Bible (particularly the first sections of Genesis) as not being intended to be understood literally.
I am one of those literal word of God people, but that kinda comes with the territory as a pastor. :-)