Diversity of rotation curves predicted from FIPs with different levels of central degeneracy Δ₀ and baryon compactness κ_b. In the physical scenario proposed in this work, where the DID mechanism is incorporated into hierarchical cosmic structure formation, Δ₀ should be interpreted as representing the average degeneracy 〈Δ₀〉 of the constituent subhalos within a host DM halo. Halos with sufficiently large 〈Δ₀〉 generate cored-halo rotation curves (solid lines), whereas those with insufficient 〈Δ₀〉 produce cuspy-halo–like rotation curves (dashed lines). For physically reasonable values of κ_b, of order unity or smaller, increasing κ_b tends to make the rotation curves shallower without significantly altering their overall characteristics. Here, we take m_d = 30 keV and M_b^tot = 5 × 10⁸ M_⊙.