At some point you're liable to discover that cookies that Cookie says no longer exist still appear in your Safari pref pane (although they disappear when you quit Safari).
I think the persistent cookies are something different, i.e. your Trump cookies, and you're going to have to tell us if Cookie actually deals with them, because you seem to be the only poster who's got them.
After a week where I've checked the Cookie window (as in Cookie software) both at the start of using Safari and at the conclusion of a session (before Cookie has a chance to clear things out) and I have yet to see any of the persistent cookies.