There's a lot of valuable information there as well as some possibly misleading information.
With regard to the housing numbers, Nicklaus leads because his courses far outweigh the others in number of houses sold per year per course. Dye averages far fewer. Think of a bunch of his courses with no or few homes and that's why: Lost Canyons (2), Whistling Straits (2), Pete Dye GC, Rum Pointe, Brickyard Crossing, Purdue U's course.
Average numbers will almost always be misleading. Averages take into account "outliers", which can skew numbers in the wrong direction. Courses like Pasadera, with multi-million dollar homes, will skew an average upwards. Weiskopf-Morrish actually had the highest average home price, then Palmer, then Nicklaus. Median numbers would be better indicators.
Here's an example of average-skewing. The 1985 Virginia Tech graduating class had an average income significantly higher than other classes around the same time period. Why? NFL's Bruce Smith graduated in 1985.
The numbers do show that Nicklaus courses tend to be more housing-oriented. Pete Dye's aren't.
It was also surprising to see how prolific Art Hills has been in the last decade. He produced the second most courses than anyone after the combination of Nicklaus Signature and Nicklaus Design.
Interesting also that C&C and Doak aren't on the "top 42" list, since they completely delve into fewer designs (Strantz too).
There's also several names I've never heard of: Jerry Matthews (32 courses in 11 years!), Joel Goldstrand, Marty Johnson (I have a co-worker by that name), Gordon Lewis, Keith Foster, Gene Bates, Graves & Pascuzzo, Clifton-Ezell-Clifton, Bob Lohmann, Bruce Matthews III, and Lindy Lindsay.
What (and where) courses of significance have these guys done?