It seems that the Z mount is very adaptable for accepting Canon lenses amongst others
And two adapters already on sale.
It will be a very interesting situation if we can swap "legacy" Canon and Nikon DSLR lenses easily between their different mirrorless bodies. I'd like to have a Nikon 500mm f/5.6 PF to work on an R mount, for example.
Fringer EF-NZ smart adapter engineering sample got tested
It's been almost a year since we began to develop smart adapter for adapting Canon EF lenses to Nikon Z mount camera. We encountered a lot of technical problems and finally solved
www.fringeradapter.com
TECHART Canon EF - Nikon Z Autofocus Adapter (TZC-01)
Native AF Performance Both AF-S, AF-C, AF-F and MF mode will work on the Nikon Z6/Z7. Face and Eye detection, EXIF reading, Timelapse function can also be supported. Phase-detect AF is used and therefore the AF speed is on par with using native Z mount lenses on the cameras. Phase-detect...
techartpro.com
CEF-NZ
altson.net