- Aegis
- Aetna
- Allstate
- Arlington/Roe
- Auto-Owners
- BCBS
- Berkley Classics
- CNA Surety
- Grinnell Mutual
- Grundy
- Hagerty
- Illinois Casualty
- Madison Mutual
- National General
- Palomar Specialty
- Pekin
- Progressive
- Randolph Mut.
- RLI Corp.
- Sadler
- Safeco
- SPRISKA
- State Auto
- Travelers
- U.S. Insurance Services
- United Healthcare
- West Bend