Stans NoTubes Grail, Industry Nine Torch ISO 6-Bolt
The Grail is the "King of One Thing" - cross tubeless. Tire fit is a bit tight, but you want it to be. Weight is 465g/rim, 24mm wide external/20mm wide internal, 25mm deep. It's also a lovely rim for gravel and some road disc use, but tire selection is important. We can guide you through that.
Industry Nine hubs are made with skill and pride in Asheville, NC. Maybe the best looking hubs around, they are durable, reliable, high speed and low drag, and simple to maintain (mostly because little to no maintenance is needed) and own. Available in a whole bunch of excellent colors, they are a great choice any in build. Available for QR, 12mm and 15mm front, and QR and 12x142 rear. Set weight 345g.