Mark – I stumbled on this post which never was responded to. You can find more of Sud’s thoughts about voicing in the Basic Resources section within “when you start to voice on your own.” (See his “voicing analysis examples” in particular).
There’s tons of theoretical stuff published on chords and harmonies. My bias is that it’s not much help to amateurs (that’s me) except perhaps to explain some things after the fact.
I think learning David’s “rules”, using them a lot (play a lot of songs) then start experimenting with sounds is a relatively modest task but can give you some creative space. If you’re curious (and persistent) you can usually discover how to describe the chord but I’m not sure how much it matters.
Suds has other info in the “Advanced resources” on polychords and stride – maybe some whole tone scale stuff – I don’t remember.