what is the pioneer controller ddj works with rekordbox and traktor 2?

Theses are all of the supported units for rekordbox-https://rekordbox.com/en/products/rekordboxdj/function.php

You will have to check with Native Instruments for any TSI files that exist for running Traktor on our controllers.  If you search around you can find files where people have mapped a controller to Traktor..