I use macOS as my front-line OS.
I run macOS on Macs and virtualised on servers and workstations running Red Hat Enterprise Linux (RHEL).
I run Kubernetes on macOS and RHEL via the Red Hat OpenShift Container Platform.
I use Fedora, RHEL, FreeBSD, FreeNAS, TrueNAS and a selection of other Linux and BSD OSes for services not necessarily run on my front-line systems.
When rarely rendering, I use RHEL with Blackmagic Design Davinic Resolve with NVIDIA CUDA acceleration and NVLINK (CPU to GPU and GPU to GPU).
I will not be purchasing a 2019 Mac Pro which I will discuss in January 2020; however, teaser time: I will be virtualising macOS on my workstation having previously installed macOS on the 2019 AMD Ryzen 7, 9 & Threadripper platforms and virtualised on the 2019 AMD Epyc platform.
I run RHEL on IBM POWER, AMD Epyc and ARM servers.