I agree with Linux as the base OS, and vm the other OSs. The trouble being the big three OSs are sworn enemies. Windows does not work well others, intentionally. As does MacOS. Finding common ground between the three is always a struggle.

VirtualBox has an app mode. Which allows you to run apps in windows, making it seem like you are running three OSs seamlessly.

https://VirtualBox.org

VirtualBox also has folder mounting. But what filesystem do you choose as a common filesystem. If you're running games in windows. Do the VM video drivers passthrough at speeds to run a game at acceptable speeds?

The nice thing with VirtualBox is it's FOSS software. So you can test this setup for free.

Good luck, I think this a great exercise to learn the limits of Windows and MacOS. And dealing with those issues.

I agree with Linux as the base OS, and VM the other OSs. The trouble being the big three OSs are sworn enemies. Windows does not work well others, intentionally. As does macOS. Finding common ground between the three is always a struggle.

VirtualBox has an app mode. Which allows you to run apps in windows, making it seem like you are running three OSs seamlessly.

VirtualBox also has folder mounting. But what filesystem do you choose as a common filesystem. If you're running games in windows. Do the VM video drivers passthrough at speeds to run a game at acceptable speeds?

The nice thing with VirtualBox is it's FOSS software (free and open-source software). So you can test this setup for free.

Good luck, I think this a great exercise to learn the limits of Windows and macOS. And dealing with those issues.