Structured Finance, Mezzanine, Exit Ops, and Capital Market

From my research, it seems Structured Finance and Mezzanine have pretty good exit ops in hedge funds. But they also are sometimes considered part of Capital Markets, and Capital Markets are considered bad for exit opts. Can someone clear up this confusion?

Also LevFin has good exit ops, but LevFin is sometimes considered part of DCM in some banks. But DCM is known to have bad exit ops. Or is DCM only for investment grade and not high yield?