Almost anything health or hygiene related, nurses, doctors, dentist, podiatrists, carers etc. (Pharmacy & physio being the main exceptions)
Anything law enforcement, police, prison wardons, rehabilitation counsellors etc.
Teaching or childcare.
All take a special kind of person with compassionate & caring & patience. I would fall too far short of that.
They are also get far too much abuse and are very under resourced & underappreciated too, despite this exceptions are massive.
Total respect for anyone in those roles.