(a) The mass density in logarithmic scale map of model C at t = 3.4 s with velocity streamlines in the corotating frame of the high-density wave at (x, y) ≈ (–150, 100) km portray a trapped Rossby vortex. (b) The mass accretion rate on the BH horizon remains roughly constant in time and across models. (c) The jet efficiency on the BH horizon is substantial for rapidly spinning BHs with strong magnetic fields.