501(c)(3) Organizations are classified into three categories that include private foundations and private operating foundations.

Public charity: These are what people think of as organisations that are active in their programs. Examples include benevolence and church organizations as well as animal welfare organizations and educational institutions, among others. They usually get a large part of their revenue either from people in general or the government.

Donations to public charities may be tax-deductible up to 60 percent of the individual donor’s income. Corporate limits generally are 10 percent. Additionally, public charities have to maintain a governing body mostly composed of non-related, independent individuals.
https://www.lotuspetalusa.org/501c3-guide/