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.
As someone whose been in the mental health system a lot, Psychologists deserve to be in A alongside social workers. Yes, there are old quacks, and the field as a whole has a lot of problems, but some of the most helpful of my many therapists were accredited psychologists.
Now psychiatrists on the other hand... C tier at best. And that's with nurses and normal doctors being moved up to A like they should be, too.