My apologies if the question wasn’t clear.
I was wondering if site-kit plugin adds any users like the one in screenshot on it’s own as it seems to have access to search console owner of domains.
bulkindexing service accounts (from screenshot) seems to be coming from sitekit as that’s the only plugin we have in wordpress which has access to our search console, it’s not only added to one domain but on all domains where we have sitekit plugin installed.
Note: About user delegate access, it’s the history of the users we removed manually.
