Hi Ben;
Seeing as you are an "extra over the top clean label", you definitely don't want to use anything that has cocoa powder in it. Cocoa powder is the bottom of the barrel in the chocolate industry - almost always a by-product of making cocoa butter.
A natural stabilizer doesn't mean the product isn't good. In fact sometimes the best ingredients NEED a stabilizer to remain in stasis.
As a chocolate manufacturer, I would take more pride in using xanthan gum, guar gum, or corn starch than stating that we use cocoa powder. Even the Aztecs and Mayans used stabilizers in their drinks. Their stabilizers were in the form of starches (ground maize) in the drinks to make them rich and frothy.
...just something to think about.
Brad.