Reader’s note: New readers are encouraged to begin with Part 0, Chapter 4 (“Architecture of the Series and Reader Orientation ”), which provides a brief overview and orientation to the Framework. Links to Preprints are listed in Part 0, Chapter 5 (“Publication and Citation Record”) Part IV of the Wittenberg Framework provides the definitive taxonomy and terminology catalogue that unifies the conceptual developments of Parts I–III into a fully formalized analytical architecture.It defines the qualitative axes (Moral Order, Relational Order, Regulatory Orientation, and Meta-Contextual Complexity), introduces their secondary taxa, formalizes the axial function spaces, and establishes Composite Types as the operative classification units of the framework. Building directly on earlier work, Part IV articulates the activation rules of each axis, clarifies their qualitative independence and categorical equality, and presents the structural logic required to represent cross-contextual governance orientations in a non-metric analytical space. It further defines Comparative Meta-Contextual Governance (CMCG) as the research field that emerges from this architecture. The taxonomy introduced here enables systematic comparison of normative, relational, regulatory, and contextual formations across cultural and institutional environments. It offers the conceptual precision necessary for higher-order analysis and provides the stable vocabulary through which subsequent Parts of the series can extend the framework into empirical, methodological, and evaluative domains. Version (2025-12-08): Initial update Version 2 (2025-12-25): Conceptual refinement and structural clarification update.A short reader-guidance paragraph was added to the Introduction to align the orientation path of Part IV with Part III and to make the role of Part IV as the definitional and taxonomic reference of the Framework explicit.In Section 5.1.1, the Moral Order axis was refined through the explicit introduction of MO-I (Interiority-Centered Moral Orientation) as a fourth qualitatively independent mode of normative justification, alongside MO-P, MO-R, and MO-S.The update clarifies the taxonomic structure of the Moral Order axis and reinforces the function of Part IV as the conceptual anchor of the series. The analytical architecture of the Framework remains unchanged; the refinement formally codifies a taxonomic distinction already implicit in earlier conceptual discussions. Version 2.1 (2026-01-03): Added Reader Orientation and Role of Part IV prologue and aligned abstract terminology (definitive taxonomic reference / lexical foundation for CMCG / Governance Simplex, non-metric model). Explicitly marked Part IV as the authoritative terminology layer. Removed former cover page for layout harmonization across the series. No conceptual or methodological changes.