OS X
I was trying to install OS X 10.6.3 on my MacBook Pro (Mid- 2010) and I copied the files to a USB stick and it booted just fine. Then after I select my language it says "macOS can not be installed on your computer". But the MacBook shipped with OS X 10.6.3 aka Snow Leopard. Also, the MacBook is fully supported and has the necessary hardware to run Snow Leopard.
MacBook Pro 13″, macOS 12.0