[1] There are many varying types, but most can be classified into two broad categories: declarations, adopted by bodies such as the United Nations General Assembly, which are by nature declaratory, so not legally-binding although they may be politically authoritative and very well-respected soft law;,[2] and often express guiding principles; and conventions that are multi-party treaties that are designed to become legally binding, usually include prescriptive and very specific language, and usually are concluded by a long procedure that frequently requires ratification by each states' legislature.
Lesser known are some "recommendations" which are similar to conventions in being multilaterally agreed, yet cannot be ratified, and serve to set common standards.
[3] There may also be administrative guidelines that are agreed multilaterally by states, as well as the statutes of tribunals or other institutions.
Monitoring mechanisms also vary as to the degree of individual access to expose cases of abuse and plea for remedies.
According to OHCHR, there are 9 core international human rights instruments and several optional protocols.