This inheritance list is sorted roughly, but not completely, alphabetically:

[detail level 123]

CApp
▼CAppExceptionHandler
CInternalServerErrorExceptionHandler
CPageNotFoundExceptionHandler
CConfig
▼CController
CFormController
CInternalRedirectController
CSimpleController
CJsonRPCController
CFlashMessage
CHttpRequest
CHttpSession
▼CInterceptor
CLoadConfigVariableInterceptor
CPageInfoInterceptor
CJsonResponse
CJsonRPCService
▼CLocaleResolver
CURLLocaleResolver
CModelAndView
CPageInfo
CPreHandleResult
CRedirectInfo
▼CRouteDefinition
CAjaxRouteDefinition
CArrayRouteDefinition
CDBRouteDefinition
CDBRouteDefinition2
CJsonRPCRouteDefinition
CRouteInfo
CRouter
CRPCAccessControl
▼CSessionHandler
CClearTemporaryUserDataSessionHandler
▼CSessionHandlerInterface
CClearTemporaryUserDataSessionHandler
▼CView
▼CPHPView
CPHPLayoutView
▼CViewResolver
CPHPLayoutViewResolver
CPHPViewResolver
▼CException
▼CAppException
CInternalServerErrorException
CPageNotFoundException
▼CJsonSerializable
CErrorResponse
CResponse