What do you mean by comparing two lists?
Do you mean your contact list and the list about contacts who have you on their contact lists?
You don't need them anymore
The "Has You" column has everything you need to see if they have you or not.
As for contact renaming, I'm unsure about that since I'm not a beta tester.
Mind you that with WLM you can rename your contacts.
As you can see from the screenshot, you can delete contacts from there.
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