Default contact app shows duplicates

New to the realm of Android so please bear with me, also google didn't yield satisfactory results.

I recently got a new android phone running 5 1 1 and the default contact app really sucks.
I have all my contacts on new outlook (recently migrated from old Hotmail to office 365 platform) and they sync fine with the phone, however every time I search, it yields the same name thrice, one from outlook, second from gmail and third from whatsapp. In the settings - contacts to display, I have...

Default contact app shows duplicates

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