SELECT tp.grantee, tp.table_schema, tp.table_name, array_agg(tp.privilege_type::TEXT ORDER BY tp.privilege_type) AS privileges, Count(*) AS number_of_privileges
FROM information_schema.table_privileges AS tp INNER JOIN information_schema.tables AS t
ON t.table_schema=tp.table_schema AND t.table_name=tp.table_name
WHERE t.table_type='BASE TABLE' AND tp.table_schema <>ALL  (SELECT schema_name
FROM INFORMATION_SCHEMA.schemata
WHERE schema_name<>'public' AND
schema_owner='postgres' AND schema_name IS NOT NULL)
AND grantee <> ALL (SELECT tableowner
FROM pg_catalog.pg_tables AS pt
WHERE pt.schemaname=tp.table_schema AND pt.tablename=tp.table_name)
GROUP BY tp.grantee, tp.table_schema, tp.table_name
ORDER BY Count(*) DESC, grantee, table_schema, table_name;