This paper develops a universal, scale-free law governing dissipative systems through their spectral structure. Building on the rigidity result established in The Canonical Λ-Field: Uniqueness, Spectral Determinants, and Dissipative Generators, this work studies how the Λ-field functions as a law-level invariant across systems rather than merely a uniquely admissible construction. The Λ-field is treated here as a profile-valued observable attached canonically to any positive selfadjoint generator of irreversible dynamics. The paper introduces Λ-profiles, dimensionless curves derived from the spectrum of a dissipative generator after canonical rank and scale normalization. These profiles encode the full mode-wise relaxation structure of a system and are shown to possess strong stability, monotonicity, and concavity properties. A natural Λ-distance between generators is defined, under which families of physically and mathematically natural systems concentrate into tight universality bands. Explicit anchor examples are developed across multiple domains, including: geometric diffusion and graph Laplacians, reversible Markov chains, quantum Hamiltonians and open systems, mechanical Hessians, learning systems and neural-network loss landscapes. Solvable model families (uniform, power-law, and random-matrix spectra) are analyzed in closed form, providing low-dimensional templates for observed Λ-profiles. These results motivate a falsifiable Λ-universality conjecture, asserting that a broad class of dissipative systems occupy a compact family of normalized Λ-profiles independent of microscopic details. Conceptually, this paper elevates the Λ-field from a rigidity result to a universal law of dissipative structure, supplying comparison metrics, normalization protocols, and empirical validation procedures. It functions as the law-of-profiles pillar of the dissipative sector, complementary to both the Tier-0 framework and the canonical Λ-field rigidity theorem. • The Canonical Λ-Field: Uniqueness, Spectral Determinants, and Dissipative Generators (https://doi.org/10.5281/zenodo.18091880)establishes a rigidity theorem for the dissipative (Δ-sector) component of the framework, proving that once irreversible dynamics is present, the associated scalar spectral invariant (the Λ-field) is uniquely forced. This result supplies the definitive collapse-sector anchor of the universal closure architecture. • The Coherence Field: A Canonical Reversible Operator Arising from Curvature (https://doi.org/10.5281/zenodo.18219057) establishes the lawful reversible counterpart to Λ-driven dissipation within the universal closure architecture. From the same curvature (second-variation) data that uniquely determine irreversible dynamics, the paper constructs a canonical, bounded, selfadjoint operator whose unitary flow captures phase-stable, record-free structure. This coherence field requires no new physical postulates or forces; it is functorially determined by admissible monotones and exists wherever a lawful dissipative generator exists. The work completes the second-variation description of admissible dynamics by identifying coherence as a universal operator-level invariant, with testable spectral signatures and scale-dependent coherence budgets across quantum, statistical, relativistic, and gravitational settings. The Tier-0 Framework and the Everything Equation: A Universal Recursion Law for Physics, Mathematics, and Information (https://doi.org/10.5281/zenodo.17813117), where the global admissibility principle for lawhood is introduced abstractly. The present work provides a definitive, sector-level resolution of the Lambda field within that framework.