Reva and Han from Fast & Furious were adults.Yeah I thought so too. But they all younglings and Padawans and the 10th was an actual Jedi Master. Maybe 10 is higher cause the 1 and the 0? I dunno. .
Can see the Grand Inquisitor being ranked above a weaker Jedi Master but younglings and Padawans?
Not familiar with 10th, but maybe he lacked ambition and didn't want to pursue management position.