Relative orbital index as a function of the DM parameter p_DM for FDM, WDM, and SIDM, shown for a 10⁹ M_⊙ dwarf-like galaxy (dotted lines) and a 10¹² M_⊙ MW-like galaxy (solid lines). The relative orbital index is defined in Equation (16). The parameter pDM, characterizing the strength of the deviations from CDM, corresponds to the FDM particle mass m₂₂, the WDM particle mass m_ν (in keV), and the SIDM crosssection σ_m (in cm²/g). Simulation results for FDM with m₂₂ = 0.3, 1, 7, and 30 are shown as orange markers. Downward (upward) arrows indicate orbital confinement (expansion) of in situ GCs relative to CDM. An equal sign indicates that we recover a CDM-like orbital behavior at m₂₂ = 7. The red shaded region for the FDM dwarf-like galaxy marks the regime where FDM dynamical friction significantly deviates from that in CDM.