This from Martin Nowak:

Northwest Homer FPD Ambulance 1714 – 2014 Ford F-350/Horton.

Hazel Crest  – Ambulance 1230 – 2014 Mercedes Sprinter/Medix Specialty
North Palos Ambulance 822 – 2014 Chevy Express 4500/2003 Osage.
Type I ambulance

Northwest Homer FPD ambulance. Martin Nowak photo

Sprinter ambulance

Hazel Crest ambulance. Martin Nowak photo

Type III ambulance

North Palos ambulance. Martin Nowak photo