Sorry Robert, I forgot to his reply I just realised as I wasn’t allowed to submit links…
There isn’t just one single SYCL compiler, there are several. This allows you as a developer to write SYCL code and use different compilers for different hardware targets.
ComputeCpp, DPC++ and hipSYCL are probably the ones you have found so far.
ComputeCpp provides a Windows version and you can use that to target Intel CPU and GPU, go to developer dot codeplay dot com.
DPC++ provides a Windows version and you can use that to target Intel CPU and GPU, and Nvidia GPUs using WSL.
hipSYCL Windows support is experimental and there is information on the GitHub page.