Standard product images along with vignetting, distortion and specs/measurements for the Canon RF 24-105mm f/4L IS USM and Canon RF 50mm f/1.2L USM have been added to the site.
Here are a couple of product image comparisons to get you started:
Canon RF 24-105L | Canon EF 24-105mm f/4L IS II | Sigma 24-105mm f/4 Art
Canon RF 50L | Canon EF 50mm f/1.2L | Sigma 50mm f/1.4 Art
The Canon EOS R has also been added to the site's Camera Top View and Camera Back View comparison tools. Click on your current camera's link at the bottom of the tool and then on the "R" to see the size/available features difference between the two cameras.