Avram: The terms Misnaged and Yekkes are widely used outside of Chabad. Generally in non-derogatory context in contemporary contexts but sometimes (regarding Misnagid) critically when relating historical information. But both Misnagid and Yekke are used both as a self-identification, obviously non self-critically, as well as by others applying it to those who identify as it.
But self-identifying as a Misnagid is mostly in a historical context. Until the resolution of the Misnagid-Chasidic conflict (which was essentially resolved almost two centuries ago, with the two sides mutually respecting each other ever since), it was common for the Misnagdim to identify with that self-chosen term. Since the resolution it is only very few “Misnagdim” that still identify themselves with that description.