Coventry was Bondarevsky's flagship -- he commanded DesRon-67.
Capships in WC generally *do* have lots of escorts...
Tiger's Claw was a "Strike Carrier", designed to operate alone -- behind enemy lines, even. Still, during a few of her operations she had an escort or served as part of a much larger fleet (SM1.5!).
Concordia generally had a single, high powered destroyer escort, and was flag to a broader fleet.
Victory often had escorts, Coventry, Sheffield and Ajax.
Lexington had escorts -- but Paulson moved the ship away from them when he attacked Intrepid... which was one of the factors behind her disable-ment.
Midway didn't have escorts because she wasn't supposed to be fighting -- during peacetime, Midway class ships are supposed to serve as mobile starbases. During wartime, as the ICIS manual points out, Midway would serve as the center of a battlegroup.