This is awesome.
I've hypothesized for a while that major factors in DCNH influence enneagram typings. Since the enneagram is supposed to describe core fixations (ie. the real non-DCNH type), DCNH may tend to muddle certain enneagram typings.
These are not perfect correlations, of course, because most enneagram descriptions I've studied are written broadly and generally, and have to account for everyone in that fixation who is a different DCNH type:
N <--> E6, E1
D <--> E8, E3
H <--> E9, E2
C <--> E5, E4, E7
So a D-ENTp would still be a 7, but identify in a major way with 3 and/or 8. A C-ESTp may have an 8 core fixation, but identify somewhat with 4, 5 and/or 7, depending on his area of creativity.
I'm a little cautious of totally interpreting the enneagram in terms of DCNH though, precisely because it's such a powerful explanatory tool. It may be possible, for instance, that the above hypothesis is all wrong and that some N-INTj E6 out there strongly identifies with 4 descriptions as well, and incidentally is secretly a very emo and emotionally possessed person. Such a person may exist, but may be rare.