Inferred Hubble constant H₀ (in km s⁻¹ Mpc⁻¹) vs. the chosen model family and expansion truncation. The fiducial values from each expansion model (displayed as squares) are chosen by considering the change in BIC score and in lnℒ_m.a.p. vs. the change in degrees of freedom. The upper dashed line corresponds to the local measurement value of H₀ = 74.0 km s⁻¹ Mpc⁻¹ with a Cepheid calibration, and the lower dashed line corresponds to the Planck value of H₀ = 67.4 km s⁻¹ Mpc⁻¹. The shaded grey regions show the error bars.