F tier - cops, military officers, coast guard, Immigration and custom inspectors

F+ tier - DAs, military, TSA officers

D tier - doctors

D+ tier - psychologists

C tier - nurses

B tier - teachers, private defense attorneys, tax collectors

A tier - social workers, janitors, government agency workers (DMV workers, office jobs, etc), public defenders, pro-bono defense attorneys

S tier - postal workers, firefighters, sanitation workers, veterinarians, anesthesiologists, park employees, forest rangers

Rest in Power p.a.t.c.o, martyrs in the fight for labor rights

EDIT: I'd like to add that this is mostly US-centric. In other countries, doctors probably range from B tier to S tier. As for defense attorneys, I honestly don't know enough about their demographics to determine how many of them are Alan Dershowitz and how many are actual public servants.