The provisions of this chapter do not apply to any:

1. (1) nonprofit corporation organized under Article 1 of Chapter 31 or 33 of Title 33 exempt from income taxes pursuant to Section 501 of the Internal Revenue Code of 1986;
2. (2) volunteer fire department and rescue squad;
3. (3) cooperative organized under Chapter 45 or 47 of Title 33;
4. (4) building and loan association or credit union doing a strictly mutual business;
5. (5) insurance company or association including any fraternal, beneficial, or mutual protection insurance company; or
6. (6) foreign corporation whose entire income is not included in gross income for federal income tax purposes due to any treaty obligation of the United States.