I saw Sandy Allnock Blog hop on youtube, she's finally released her chart, The Hex Chart. This chart is a color scheme chart, in relation to how color blend better and how close the colors are to each other. It's not meant as a replacement to the Original Copic Chart, rather it's to go alongside.
Her chart was $5.99 for a zip file. That comes with a color chart and then a blank chart.
Check out this amazing artist Sandy Allnock on youtube or her blog Sandy Allnock Blog