Yes, it will work with a GX Eagle or above cassette that uses the XD specification.
The Wahoo freehub is actually an XDR one which is 1.8mm wider than XD to accomodate road 12 speed, so you will need to use the spacers supplied with the freehub body.
Most people seem to settle on using one of the cheaper NX or below cassettes from SRAM as these use the old HyperGlide spline format and individual cogs with spacers rather than the pinned or fully machined cassettes that use XD(XDR) found higher up in the range. You won’t need to buy the XD/XDR driver body and the cassettes are much cheaper.
A couple of things to note are that a 50T cog as found on Eagle is massive and not all trainers will actually accomodate this. I made a note about this on another thread as it looks like Elite Drivo, Drivo II, Kura and Turno trainers will not work with an 50T cog as parts of the trainer body foul the cassette and stop it from turning. The Kickr/Kickr Core all look fine in this respect so go for it.
The other thing is that the HG body does not support 10t cogs and so the smallest is 11t.
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