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

[detail level 1234]

AccountModule
AccountTypes
AccountTypesLimits
AccountTypesLimitsSite
SiteUpdate
SiteNew
UrlUpdate
UrlDelete
UrlReprocess
AccountUsers
AssignmentForm
AuthChildForm
AuthItemForm
Booster
BoosterFilter
BootstrapCode
BootstrapGenerator
CActiveRecordUsersRights
CMD
ContactForm
Controller
ActivationController
AdminController
AjaxController
DefaultController
LoginController
LogoutController
MainAccountController
AccountController
AccountTypesController
AccountTypesLimitsController
AccountUsersController
MainJobsController
JobsController
JobsLogsController
ProfileController
ProfileFieldController
RecoveryController
RegistrationController
ResourceDownloadController
SiteCleanupController
SiteController
SiteDeleteController
SiteNewController
SiteRecrawlController
SitesViewController
SiteUpdateController
UrlCleanupController
UrlDeleteController
UrlRecrawlController
UrlReprocessController
UrlsViewController
UrlUpdateController
UserController
CronExpression
CSerializeBehavior
CBase64Behavior
CBase64SerializeBehavior
Dictionary
EchoCommand
Errors
FieldFactory
FieldInterface
AbstractField
DayOfMonthField
DayOfWeekField
HoursField
MinutesField
MonthField
YearField
GenerateForm
GRI
JobCommand
JobInterface
Job
DeleteUserTempJob
JobLog
JobManager
JobModule
Jobs
Job
JobsLogs
JobLog
JobStatus
JSONStorage
Logger
LoginForm
m110805_153437_installYiiUser
m110810_162301_userTimestampFix
ProfileField
RAssignmentDataProvider
RAssignmentSitesDataProvider
RAuthItemBehavior
RAuthItemDataProvider
RAuthItemChildDataProvider
RAuthItemParentDataProvider
RAuthorizer
RController
AssignmentController
AuthItemController
InstallController
UsersSitesRightsController
RDbAuthManager
ResourceDownload
RGenerator
Rights
RightsFilter
RightsModule
RInstaller
RPermissionDataProvider
RUserBehavior
RWebUser
SiteCleanup
SiteDelete
SiteRecrawl
Sites
SitesView
StatesBinaryFieldBehavior
TagsReaperUIModule
TbActiveForm
TbBaseInputWidget
TbColorPicker
TbDatePicker
TbDateRangePicker
TbDateTimePicker
TbTimePicker
TbTypeahead
TbBaseMenu
TbDropdown
TbMenu
TbBreadcrumbs
TbBulkActions
TbButtonColumn
TbButtonGroupColumn
TbJsonButtonColumn
TbButtonGroup
TbCarousel
TbCKEditor
TbCollapse
TbDataColumn
TbJsonGridColumn
TbJsonDataColumn
TbJsonPickerColumn
TbPopoverColumn
TbRelationalColumn
TbToggleColumn
TbJsonToggleColumn
TbTotalSumColumn
TbDetailView
TbEditable
TbEditableField
TbEditableColumn
TbEditableDetailView
TbEditableSaver
TbExtendedFilter
TbExtendedTooltipAction
TbFileUpload
TbForm
TbFormButtonElement
TbFormInputElement
TbGoogleVisualizationChart
TbGridView
TbExtendedGridView
TbGroupGridView
TbJsonGridView
TbGroupButtonColumn
TbHeroUnit
TbHighCharts
TbHtml
TbHtml5Editor
TbImageColumn
TbImageGallery
TbInput
TbInputHorizontal
TbInputVertical
TbInputInline
TbInputSearch
TbJsonCheckBoxColumn
TbJumbotron
TbListView
TbThumbnails
TbMarkdownEditor
TbMarkdownEditorJS
TbModal
TbModalManager
TbNavbar
TbOperation
TbCountOfTypeOperation
TbPercentOfTypeOperation
TbPercentOfTypeEasyPieOperation
TbPercentOfTypeGooglePieOperation
TbSumOperation
TbPager
TbJsonPager
TbPassfield
TbRedactorJS
TbScrollSpy
TbSelect2
TbSortableAction
TbSwitch
TbTabs
TbTabView
TbTags
TbToggleAction
TbUiLayout
TbWidget
TbAlert
TbBadge
TbButton
TbLabel
TbPanel
TbProgress
TbWizard
UActiveForm
UActiveRecord
Profile
UHtml
UrlCleanup
UrlRecrawl
UrlsView
User
RegistrationForm
UserChangePassword
UserIdentity
UserLogin
UserModule
UserRecoveryForm
UsersRights
UsersSitesRights
UsersRightsDefaults
UWfile
UWjuiAutoComplete
UWjuidate
UWrelBelongsTo
VarDumper
WebTestCase
SiteTest
WebUser
YFormatter
Yii2Debug
Yii2DebugLogRoute
Yii2DebugModule
Yii2DebugPanel
Yii2ConfigPanel
Yii2DbPanel
Yii2LogPanel
Yii2ProfilingPanel
Yii2RequestPanel
Yii2ViewPanel
Yii2DebugViewRenderer