Weird discrepancy between subscriber count and database table..

I’m working on exporting my subscribers to a CSV, and since the export functionality doesn’t work at all, I’m trying to extract the data on my own.

My list in the admin panel says it has 900+ subscribers. However the database table only has around 600. There are specific users listed in the admin panel that, if I search the ENTIRE database of the site, never show up in any table / record / etc.

Is there a second location where some subscribers are stored? I’ve even done a full site FILE text search and can’t find some of the subscribers (just in case some folks are stored to a text file somewhere, or something weird like that).