A. The State or any political subdivision of the State, the Federal Government or any unincorporated agency or instrumentality of either of them or any incorporated agency or instrumentality of them wholly owned by them;

B. Incorporated hospitals;

C. Incorporated nonprofit nursing homes licensed by the Department of Health and Human Services;

D. Incorporated nonprofit assisted housing programs for the elderly licensed by the Department of Health and Human Services;

E. Incorporated nonprofit residential care facilities licensed by the Department of Health and Human Services;

F. Incorporated nonprofit home health agencies certified under the United States Social Security Act of 1965, Title XVIII, as amended;

G. Incorporated nonprofit rural community health centers engaged in, or providing facilities for, the delivery of comprehensive primary health care;

H. Incorporated nonprofit dental health centers;

I. Institutions incorporated as nonprofit corporations for the sole purpose of conducting medical research or for the purpose of establishing and maintaining laboratories for scientific study and investigation in the field of biology or ecology or operating educational television or radio stations;

J. Schools;

K. Incorporated nonprofit organizations or their affiliates whose purpose is to provide literacy assistance or free clinical assistance to children with dyslexia;

L. Regularly organized churches or houses of religious worship;

M. Incorporated private nonprofit residential child care institutions licensed by the Department of Health and Human Services as child care institutions;