It seems that on the OSPO Survey 2022 pdf version (https://github.com/todogroup/todogroup.org/files/9557802/OSPOSurveyResults_2022.pdf) page 24 "Consensus about top OSPO responsibilities is greater among North American organizations" the graph is missing the legend. Right side there is a graph that has 13 categories and for each there are 4 pillars (%) and these pillars do not have any legend.
These pillars are likely regions like they are on page 30:
Total
USA & Canada
Europe
Asia-Pacific (including Oceania)
But the pillars could be something else, e.g., organization size.
It seems that on the OSPO Survey 2022 pdf version (https://github.com/todogroup/todogroup.org/files/9557802/OSPOSurveyResults_2022.pdf) page 24 "Consensus about top OSPO responsibilities is greater among North American organizations" the graph is missing the legend. Right side there is a graph that has 13 categories and for each there are 4 pillars (%) and these pillars do not have any legend. These pillars are likely regions like they are on page 30: