Corporate ownership graph for a legal entity by LEI (GLEIF Level-2 relationships, live). Returns the direct parent and ultimate parent (each: LEI, legal name, jurisdiction, country, status), the direct children (paged), and total counts of direct and ultimate children. The authoritative 'who owns whom' lookup for KYB, beneficial-ownership, and corporate-tree mapping — complements business.lei (entity reference) and business.lei-isins.