Yeah those were terrible examples. But more proper ones would be: truck and van drivers for mail, food and other delivery to stores, bus drivers, taxi drivers, farmers, police, EMT, etc.
* UPS is trying "equad" bikes: https://www.reuters.com/technology/ups-tries-out-equad-elect...
* London has bike paramedics: https://www.londonambulance.nhs.uk/calling-us/who-will-treat...
* Most taxi rides in urban areas could easily be replaced with e-pedicabs
> They are able to reach patients quickly and start to give life-saving treatment while an ambulance is on the way.
You still need an ambulance, because that person is going to need to go to hospital in nearly all cases except the most trivial "fell over while drunk" cases, and backies are impractical for the average person in need of a paramedic.