Behaviors with respect to γ (exponent of the power law for the initial orbital energy distribution). Panels a and e: flux of observable comets per year (normalized for an initial Oort cloud with 10¹² comets. Panels b and f: first, second (black line) and third quartiles for the initial semi-major axis. Panels c and g: first, second (black line) and third quartiles for the original semi-major axis. Panels d and h: proportion of observable comets in each class (red for jumpers, blue for creepers, orange for KQ-jumpers and magenta for KQ-creepers). Panels a–d: disk-like proto-Oort cloud. Panels e–h: isotropic proto-Oort cloud.