Rutherford, LePere-Schloop and Perai highlight the challenges of establishing a classification system for CSOs and applying it consistently even after reaching agreement around a definition of civil society as a sector and laying out criteria for determining which organizations are in and which are out. In countries in which the sector is regulated and where there are registries available, classification may be driven by existing online datasets, even though it is often the case that not all data is publicly available. Such information may be useful for policymakers, while posing additional challenges for researchers seeking comparability across countries and regions. Variety therefore suggests the need to strike a balance between standardization and localization. This resonates strongly when it comes to classifying CSOs in Latin America.