Three other people listed as board members on MCAT’s website — Brown, Poetri Deal and Afra Vance-White — had city government jobs in the Pugh administration until now-Mayor Bernard C. “Jack” Young fired them last month after Pugh went on medical leave April 1. Brown also has been listed as a board member on MCAT’s tax records filed with the IRS and in its reports to the state. But the names of Deal and Vance-White appeared only on a now-defunct page on the group’s website.