The Microsoft Store has SUSE Linux Enterprise Server 15, which will run as a WSL program. SUSE Linux Enterprise Server 15 is an open source server operating system designed to support physical, virtual, and cloud-based mission-critical workloads. It is a modular, general-purpose operating system that runs on all major processor architectures. It is optimized to run on leading hypervisors and support an unlimited number of virtual machine guests per physical system with a single subscription, making it the perfect customer for virtual and cloud computing.
Once installed, users can launch SUSE Linux Enterprise Server 15 by typing “sles-15” on the command line or by clicking the appropriate tile in the Windows 10 Start menu.
Get it here.