Comparison of the Minkowski functionals applied to each frequency channel of the lightcone between the synthesised lightcones (after the inverse quantile transform) and the target lightcone. The mean Minkowski functionals across the lightcone are shown, with shaded regions indicating their standard deviation. From the bottom panel, M₀ and M₁ of the synthesised lightcones recover the target lightcone’s Minkowski functionals well, lying within the octant variance, σ_t^oct, and reproducing its morphology. The M₂ of the synthesised lightcone follows that of the target lightcone and lies within ±2.5σ_t^oct.