Fiducial ring structure of the M87* black hole shadow (green contour) with a single Gaussian component (solid blue contours) corresponding to the best-fit parameters found in Section 4.2 (Table 1, first set) and double Gaussian components (dashed contours) corresponding to the best-fit parameters found in Section 4.4 (Table 1, second set), overplotted on the jet in M87* observed at 86 GHz (heatmap) with the GMVA (Lu et al. 2023; Kim et al. 2025). The green dotted line shows the jet orientation.