Are the profile verification charts available somewhere so that I can see the color patches before running the profile verification?
Which chart is the most comprehensive?
You can load them in the testchart editor for a preview. The currently most comprehensive chart is the "large" variety with 600 patches.
If you want to go even further, you may be interested in generating your own customized chart. To do that, choose a fair amount of grayscale and single channel patches (probably around 25) and a large amount of iterative patches with the default optimized farthest point sampling algorythm.