Ubuntu XFCE: https://github.com/DesktopECHO/xWSL
KDE Neon: https://github.com/DesktopECHO/kWSL
Kali: https://github.com/DesktopECHO/Kali-xRDP
These scripts will build a complete RDP-accessible Linux desktop environment in WSL. A GPU isn't needed to see a significant performance gain over 'stock' XRDP.