How would you describe an ideal examiner for your viva?
Think about the qualities or attributes that they might have. Describe their research.
There might not be an individual you know of who meets these criteria. It may be close though: someone who satisfies three or four out of five points you might write down.
Now, what could you do to share this idea with your supervisor? You can’t choose your examiners, you can’t find perfection, but can you find someone close to the ideal you have in mind?