Guest Support for Hyper-V (including free Hyper-V Server) 2016 and WS 2016 has clearly improved but there is still a gap compared to VMwares support for older or less mainstream operating systems.
For specific levels/version check (Software Requirements section) : https://technet.microsoft.com/en-us/windows-server-docs/compute/hyper-v/supported-windows-guest-operating-systems-for-hyper-v-on-windows