- Accident Fund Insurance Company
- Aegis
- Allstate
- American Modern Insurance Group
- CNA Surety
- Foremost
- Grinnell Mutual
- Hagerty
- Hallmark
- Hartford
- HCC
- Liberty Mutual
- Markel
- Mdow
- National Security
- North American Company
- North Star Mutual Insurance Company
- Philadelphia
- Progressive
- Safeco