Pluralist Interest Group System: In this type of interest group system, multiple diverse interest groups exist independently from the state and compete for influence over governmental decision-making processes.
Corporatist Interest Group System: This type of interest group system is characterized by close cooperation between interest groups, labor unions, and the state. The government exercises significant control over these groups and often incorporates them into policymaking processes.
State-Controlled Interest Group System: Also known as a "state corporatism," this type of interest group system features strong government control over all aspects of interest groups. These groups have little or no autonomy from the state, with the government tightly regulating their activities and limiting their independence.