Thanks for writing this. It was very informative and I appreciate the references from good sources.
The elevated glucose in blood after eating carbs for lunch in breakfast-skippers is probably a normal physiological response.
In reference #4 the authors didn't really comment too much on the fact that even though glucose and insulin were higher after lunch in breakfast-skippers...these parameters were still less than in breakfast-eaters if you look at the area under the curves for the entire day. I think this is really key...to not have glucose and insulin elevated ALL the time.
Lately I have eggs with cheese for breakfast and do not introduce carbs until late-lunch-ish, usually as a modest portion of white rice. It's been working great for me!