The RiskMetrics database available on the WRDS platform has been renamed ISS. The link to ISS can now be found on the I-J tab of the main databases page. Through this summer, there will be a see reference link on the Q-R tab that redirects users to the I-J tab for the ISS link.
FWIW, I had forgotten about what was in this particular database. If you want data on directors (names, ethnicity, affilations, etc.) and governance of a publicly traded company, then ISS is the place to go.