I've learned the hard way that there's isn't always a definitive answer to such queries.
That's because the answer can be different according to the geological and the geographical points of view.
For example, are Utah's Wasatch Mountains part of the Rocky Mountains?
Yes, by geography standards, but a firm no by geology.
The Wasatch is a geographical segment of the Rocky Mountains, but in geology terms they are very separate and distinct.
What's on maps usually dominate and they are usually done by the geographical point of view, but that doesn't satisy many geologists.
I don't know much about Guadalupe, but it may be a similar situation.