Wheelbuilding / Wheel Building / Wheel build help

I need to rebuild a wheel. I got a bit rad on my way too a gravé ride and cracked my rear Mavic Open Pro CD :-/

• I intend to keep the hub (DA7900) which means 32 spokes.
  
• I don't care about 'matching' the front Mavic rim aesthetically.
  
• Braking on this wheel is done with a mini-v brake.
  
• I may run this wheel tubeless at some point.
  
• I'll use Sapim Race spokes and brass nips (I guess).
  
  

Which rim though, for singletrack, gravel and occasional cx, currently running 40mm tyres + latex tubes?

Kinlin TL-23 (symmetric). Wide. Not rim-brake approved.

Kinlin XR-22RT (asymmetric). Not so wide.

Is there a clear advantage to either?