RACE / PERFORMANCE: XTR X0 (XX is for 2×10) (X1 is single front)
TRAIL: XT X9
RECREATION: Deore X5
Shimano brakes follow the component levels, SRAM brakes are Avids…
This may not be completely correct but I think probably close. There are other junk components that you will not find listed as they are made and put on box store bikes. The DH and free ride specific parts are tuned for those disciplines and isn’t worth comparing to the other style of components. XTR or the SRAM equivalents are great but in my opinion you get more bang for the buck at the XT/X9 level. Shimano, as far as I know, does not market 1×10 and 2×10 systems under other labels and are simply branded as "SLX 2×10" or similar.
As far as a winner…..it’s definitely preference. I personally find the Shimano to have a smoother feel in the actuation. Sram uses a 1:1 shifting ratio while Shimano uses 2:1. That results in the SRAM having to move the cable further. Then the Shimano uses a two lever setup (one shifts up the other down) while the SRAM uses one lever (one direction shifts up the other down). Both have two year warranties though I believe SRAM forces you to deal with a bike shop while Shimano will handle warranty claims from the purchaser. That may not be the case anymore but it was at one point.