You can view the cookie contents and domain in a text editor like Sublime Text (3rd party) or Notepad (Included with Windows)
A text editor like Sublime Text allows you to open them all at once and search within the files. It presents a summary and one can then delete the cookie for the site they wish to delete cookies for.
There may be other tools out there, but this is what worked for me to get rid of a certain cookie.
And I for one will absolutely be putting in a feature request as per Microsoft's answer.
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