Comparison of the effects of different DM models (FDM, SIDM, WDM) on the structure of DM halos and on the orbital phase space accessible to in situ GCs in an MW-like potential with M_halo = 10¹² M_⊙. Top row: DM density profiles for different parameter values of each model (m₂₂ for FDM, σ/m for SIDM, and m_ν for WDM), in the absence of baryons. The red and orange dashed lines represent the CDM and baryonic profiles, respectively. Bottom row: Normalized E–L_z diagrams computed in the total gravitational potential (DM + stars) using the same parameters as in the top row. These diagrams describe the orbital phase space accessible to in situ GCs at z = 0, which varies depending on the DM model parameter.