SRAM CL Centerline X 160mm x3 Rotors, Shimano / Rival disc calipers, Hope head Dr, BLB king track hub

The XD Freehub takes a 12 speed sram cassette right? New to disc and 12 speed and haven’t worked out the difference, if any, between XD and XDR - guess R is for Road? Dibs on the Freehub until I’ve worked it out please!

I'm no expert, purchased for 11 speed SRAM but the internet suggests it is for 11 & 12 speed but do verify yourself first...