It is not listed because it was unable to install successfully.
While trying to find the issue in the update log (C:/Windows/SoftwareDistribution/Reporting Events.log)
It showed the error code x802400d.
Which could be bypassed by manual installation using Microsoft update catalog.
KB4568831 download link
This worked for me
Hoping that it will work for you too.
Yes i know. I was replying to noellapin who stated they had to
uninstall the patch to get the patch to install correctly!! In other words i thought the patch might appear as installed when it wasn't.
In fact they repeated this in a response you further down this page
"And for my case, uninstalling solved the problem."
Anyway following your steps did not work for me either.
It just stated the following updates were
not installed:
Update for Windows (KB4568831)
i'm giving up. Can't be that important.