This chapter explores the development of typologies as a way of making sense of the spectrum of police misconduct and proposes new advanced analytical methods for measuring typologies into the future. Misconduct is not a single behaviour but a range of actions, from relatively minor rule-breaking and maladaptive coping strategies to serious corruption and abuse of authority. Early efforts to classify misconduct distinguished between opportunistic behaviours and more organised, proactive forms of corruption, showing that deviance could not be reduced to a few isolated individuals but reflected systemic patterns. Over time, typologies expanded beyond corruption alone to include occupational deviance, misuse of authority, and behaviours shaped by police culture and organisational norms. Later work introduced more nuanced distinctions, such as differentiating misconduct by motive, opportunity structure, and degree of peer support. As the field matured, research shifted from anecdotal and descriptive accounts to empirically grounded frameworks that used larger datasets, case coding, and statistical modelling to uncover patterns. These developments show that typologies remain an essential tool for understanding the complexity of misconduct and for designing targeted, context-specific prevention and intervention strategies.