How to Remove persistent "Samsung Account" notification? It keeps showing up regardless of settings

I have been struggling to find out how to turn off (or otherwise hide) the notification that says:

Samsung account
Tap here to use your Samsung Account

I've read elsewhere online about ways to stop this, but they don't seem to be working. I tapped the notification, held down and went to "Details" on the Notification.

According to that screen, I shouldn't be getting these notifications but still am.

How can I turn this off (without signing in to Samsung or creating an account)?

(Galaxy S8 Active, Android 8.0.0, Samsung Experience Version 9.0)

Edit: 9 November 2018 - Now the notification is showing and making a "text message" noise. I still can't figure out how to stop this!

Edit: 17 Dec. 2018 - Still getting the notification multiple times per hour sometimes, and it makes the text message noise. I've done everything I can find online and there's no solution still...