I've added some more topics. I don't know if they're the broadest and most important, though. In many cases, I'm sure they're not, but I don't know which ones would be so considered. Please, please check and edit the entries in your areas of expertise. See talk:Wikipedia arranged by topic.
... nasal stop at each of the following places of articulation:
Velar (soft palate[?]) (k, kh, g, gh, n as in ing)
Palatal (hard palate[?]) (c, ch, j, jh, ...