The California data broker registry is a live file. Companies register, companies stop being data brokers, and a registry page that never changes is a registry page that has quietly gone stale. This page records the movement.
Every month the state's export is re-downloaded, stored, and compared against the previous month. What is reported here is the comparison: how many records the file held, how many were new against the previous month, and how many were gone. The check counts records rather than naming them, so nothing here asserts that a particular company joined or left.