It would be an interesting project to create something beyond just enumerating of these styles, to make this more quantitative & useful. For example, do some stats that correlate people styles to project styles. Create a taxonomy of project model aspects, and of measurements to evaluate their effectiveness. Basically, create something by which people can decide what particular changes are likely to help, given their situation, instead of just throwing up all the possibilities and advising a random walk.
But then again, perhaps FOSS projects are too small compared (in size and population) to proprietary ones, so we'd never get enough data to be meaningful.