Hi CieJey,
Yes indeed, it is Nillkin Magic Tags Receiver. And I use both IKEA Livboj and Nordmarke but another version, see this NORDMÄRKE Ladehalter, kabellos, Bambus - IKEA Deutschland.
With IKEA pads, the charging time is around 3 hrs. The phone indicates “charging”; thus not “Slow charging” or “fast charging” either.
The Nillkin receiver will be positioned slightly to the left side of the phone because of the location of the USB-C port, and therefore you need to be a little bit more careful to align the pad with the receiver. The main pluspoint with IKEA pads I see is that you do not need to worry too much about the orientation of the phone in this sense.
Here is also my post with pics of the phone showing the small modification I made on the original protective case: