The Nikon D5 and D500 sensors are both made by Sony

Nikon D5 CMOS sensor made by Sony

Nikon D5 CMOS sensor unit

TechInsights (previously known as Chipworks) published their reports on the sensors inside the Nikon D5 and D500 DSLR cameras – both sensors are made by Sony:

For a detailed list of Nikon DSLR cameras and their sensor manufacturer/designer, see this post.