Brazilian Crime Syndicates OSINT Study

I need a thorough OSINT-driven intelligence brief on the five most influential criminal groups operating in São Paulo and Rio de Janeiro. The priority is their leadership structure: who actually calls the shots, and also finding the other members.
For every organization I must receive a concise yet well-sourced dossier that covers:
• an overview of the group’s history, size, and core illicit activities;
• a clear diagram or narrative of the chain of command;
• full names and known aliases of key leaders;

Please rely on open-source techniques only, combining surface web searches with deep-web forums, breach data, social-media scraping, and Brazilian public records. All findings have to be time-stamped and referenced so that I can retrace the source later.

Deliverables will be:
1. One PDF report (English) summarising each group, its hierarchy, and leader profiles.
2. A spreadsheet or CSV containing raw contact data, links, and source URLs.
3. A brief methodology section explaining the search strings, tools, and validation steps used.