| Safeco |
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| The Progressive Corporation (Principal Office Location: Mayfield Village, Ohio) |
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| Aetna |
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| Humana |
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| Ohio Casualty Group |
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| Foremost Insurance Group (Principal Office Location: Caledonia, Michigan) |
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| Trexis Insurance |
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| Donegal Insurance Group |
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| CNA Surety Corporation (Principal Office Location: Chicago, Illinois) |
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| American Collectors Insurance |
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| Dairyland Auto |
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| Mutual of Omaha |
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| Celina Insurance Group |
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| Old Republic Surety Company |
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| Travelers |
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| Merchants Insurance Group |
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| Hagerty Group, LLC (Principal Office Location: Traverse City, Michigan) |
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| Wayne Mutual Insurance |
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| Golden Rule, a United Healthcare Co. |
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| Goodville Mut. Casualty Co. |
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| Personal Umbrella |
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| Frankenmuth Insurance |
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| United Fire Group |
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| Delta Dental |
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