Over the last couple of days, I've had conversations with people about the content of UX guidelines. What should be included in a UX guidelines?
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, see the FAQ.
It's very hard to say you need to include "this" exact set of guidelines. Remember a core principle behind good UX design is that of user centric design. Your users will dictate the experience they want. A set of UX design guidelines for a shopping website v's a tabloid-news paper site will be vastly different.