Sony A7R VI has a Sony E lens mount and currently there are 363 native lenses available for this mount.
The latest released lenses that are compatible with the A7R VI are the Tamron 12-20mm f2.8, the Viltrox 26mm f2.8 FE and the SG-image AF 35mm f2.2.
A7R VI also has a sensor based image stabilization system that is up to 8.5-stops effective which means that all of these lenses will be stabilized when used on the A7R VI.
Since Sony A7R VI has a Full frame sensor, it has a focal length multiplier of 1x so lenses will provide their original focal length on A7R VI.
You may also also be interested in these:
Sony A7R VI Lenses with Image Stabilization
Sony A7R VI Lenses with Weather Sealings