Im running a boost frame with non boost wheels/tyres.
Sram XX1 1 x set up have had no problems at all with the chainline.
Im moving to a XT c/set as the Q factor is wider and should give me a little more chainstay clearance on the non driveside. Once again its a non boost c/set.
If you read this info it pretty much says the same thing for a boost frame with non boost wheels a chainline of 49-50 is ideal.
If the intent is to run actual boost wheels you may be better with some of the boost specific c/set XT being one for example.
Hope that helps a little.