Manhattan Life Insurance Building was created in 1894.
While this is clearly not a complete list, I did find a few insurance buildings in New York City. They are the New York Life Insurance Building, Manhattan Life Insurance Building, and the Met Life Building.
Germania Life Insurance Company Building was created in 1910.
Former New York Life Insurance Company Building was created in 1899.
North Carolina Mutual Life Insurance Company Building was created in 1898.
Brookings International Life Insurance Co. was acquired by Manhattan Life Insurance Company in 2011.
Samsung Life Insurance was created in 1957.
Tower Life Building was created in 1929.
Atlas Life Building was created in 1922.
Life Savers Building was created in 1920.
Sun Life Building was created in 1931.
Occidental Life Building was created in 1917.
National Life Insurance Company was created in 1848.