I suppose, the data is there for all with access.
It goes like this: look for account not supporting witness, look at the content (usually 'average' at best), look at the voters of that content, check ownership of (usually alt account), remove witness.
Looking at the chart (mine that is!), I see action ahead for STEEM, and not so much for SBD. Are they finally doing what 'we' want and expect?