Look at some of the Message Header.
View internet message headers in Outlook - Microsoft Support

Ensure that the Header from line has the format "From: Xxxxx <yyyy.com>". Where "Xxxx" is the Display Name you are looking for.

Create an Outlook "Message Header Includes" Rule
Create rule based on email header - Microsoft Q&A

Use something safe like Assign A Cat for the action. Play with it until you are sure it's working right. Change the Action to Delete.

You may need to use additional Conditions and Exceptions to eliminate any false positives.