Teachers. Big time.

Garbage collectors/sanitation workers.

• Climatologists. I took a fair number of undergraduate climatology courses, and witnessed first hand how researchers have to wade through the intense politicization of their discipline. I don't know how they do it? They must have nerves of steel.
• Veterinarians and veterinary technicians. Vets have to learn more medicine than most doctors and apply it across a wide range of species, because just having to deal with human physiology would be too easy. And yet it's not a high-paying profession and they often have to deal directly with angry pet owners feeling they're being overcharged. It's a high burnout profession. Vet techs, for their part, do everything a nurse practitioner would do, plus add a bunch of extras like anesthesiology, basic surgeries, and so on.