I think it’s only because of shidduchim that all these new labels got invented. “Modern Yeshivish”, “Modern Orthodox Machmir”, “Modern Orthodox Liberal”, “Modern Orthodox middle-of-the-road” and “Carlebachian” are all pretty new inventions.
When and where I grew up you were either Yeshivish or not-Frum. I thought my family was strange because we weren’t either one, but at the same time I didn’t think that anyone was labeling us, and I didn’t really see too many differences (although that may be more a reflection on me than anything else).