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

[detail level 1234567]

ArrayAccess
oxList
oxActionList
oxAmountPriceList
oxArticleList
oxAttributeList
oxCategoryList
oxContentList
oxCountryList
oxDeliveryList
oxDeliverySetList
oxDiscountList
oxManufacturerList
oxNewslist
oxOrderArticleList
oxOrderFileList
oxPaymentList
oxShopList
oxSimpleVariantList
oxUserList
oxVendorList
oxVoucherList
Countable
oxList
dtausbuilder
oxDtausBuilder
Exception
oxException
oxArticleException
oxArticleInputException
oxNoArticleException
oxOutOfStockException
oxConnectionException
oxAdoDbException
oxCookieException
oxFileException
oxInputException
oxLanguageException
oxObjectException
oxShopException
oxSystemComponentException
oxUserException
oxVoucherException
Iterator
oxList
oxTagSet
MyOrder_parent
MyOrder
oxBasketContentMarkGenerator
oxCcValidator
OxConfigFile
oxCounter
oxCurl
oxDb
oxDebugDb
oxDebugInfo
oxDecryptor
oxDiagnostics
oxDiagnosticsOutput
oxDynImgGenerator
oxEncryptor
oxErpArticle450_parent
oxErpArticle450
oxErpArticle_parent
oxErpArticle
oxERPBase
oxErpCsv
oxErpGenImport
oxERPType
oxERPType_Accessoire
oxERPType_Artextends
oxERPType_Article
oxERPType_Article2Action
oxERPType_Article2Attribute
oxERPType_Article2Category
oxERPType_Attribute
oxERPType_Category
oxERPType_Content
oxERPType_Country
oxERPType_Crossselling
oxERPType_Order
oxERPType_OrderArticle
oxERPType_ScalePrice
oxERPType_User
oxERPType_Vendor
oxExceptionHandler
oxField
oxFileChecker
oxFileCheckerResult
oxFileCollector
oxHasher
oxSha512Hasher
oxHeader
oxIArticle
oxArticle
oxOrderArticle
OxIConfigurable
Oxid
oxIDisplayError
oxDisplayError
oxExceptionToDisplay
oxISelectList
oxSelectlist
oxVariantSelectList
oxITagList
oxArticleTagList
oxTagList
oxIUrl
oxArticle
oxCategory
oxContent
oxManufacturer
oxRecommList
oxSimpleVariant
oxVendor
oxMaintenance
oxNoJsValidator
oxOnlineModuleVersionNotifier
oxOpenSSLFunctionalityChecker
oxPasswordHasher
oxPasswordSaltGenerator
oxPrice
oxPriceList
oxRegistry
oxSelection
oxSepaBICValidator
oxSepaIBANValidator
oxSepaValidator
oxShopViewValidator
oxSimpleXml
oxSmartyRenderer
oxStdClass
oxStr
oxStrMb
oxStrRegular
oxSuperCfg
ajaxListComponent
actions_article_ajax
actions_groups_ajax
actions_main_ajax
actions_order_ajax
article_accessories_ajax
article_attribute_ajax
article_bundle_ajax
article_crossselling_ajax
article_extend_ajax
article_selection_ajax
attribute_category_ajax
attribute_main_ajax
attribute_order_ajax
category_main_ajax
category_order_ajax
delivery_articles_ajax
delivery_categories_ajax
delivery_groups_ajax
delivery_main_ajax
delivery_users_ajax
deliveryset_country_ajax
deliveryset_groups_ajax
deliveryset_main_ajax
deliveryset_payment_ajax
deliveryset_users_ajax
discount_articles_ajax
discount_categories_ajax
discount_groups_ajax
discount_item_ajax
discount_main_ajax
discount_users_ajax
manufacturer_main_ajax
news_main_ajax
newsletter_selection_ajax
payment_country_ajax
payment_main_ajax
selectlist_main_ajax
selectlist_order_ajax
shop_default_category_ajax
statistic_main_ajax
user_main_ajax
usergroup_main_ajax
vendor_main_ajax
voucherserie_groups_ajax
oxBase
oxAddress
oxFile
oxGbEntry
oxI18n
oxActions
oxArticle
oxArticleTagList
oxAttribute
oxCategory
oxContent
oxCountry
oxDelivery
oxDeliverySet
oxDiscount
oxGroups
oxLinks
oxManufacturer
oxMediaUrl
oxNews
oxPayment
oxSelectlist
oxShop
oxSimpleVariant
oxState
oxTagList
oxVendor
oxWrapping
oxImex
oxNewsletter
oxNewsSubscribed
oxObject2Group
oxOrder
oxOrderArticle
oxOrderFile
oxPricealarm
oxRating
oxRecommList
oxRemark
oxReview
oxStatistic
oxUser
oxUserBasket
oxUserBasketItem
oxUserPayment
oxVoucher
oxVoucherSerie
oxBasket
oxBasketItem
oxBasketReservation
oxCaptcha
oxConfig
oxDbMetaDataHandler
oxEfiDownloader
oxInputValidator
oxLang
oxLegacyDb
oxList
oxLocator
oxMdVariant
oxModule
oxModuleList
OxNavigationTree
oxOutput
oxPaymentGateway
oxPictureHandler
oxRssFeed
oxSearch
oxSeoDecoder
oxSeoEncoder
oxSeoEncoderArticle
oxSeoEncoderCategory
oxSeoEncoderContent
oxSeoEncoderManufacturer
oxSeoEncoderRecomm
oxSeoEncoderTag
oxSeoEncoderVendor
oxSession
oxShopControl
oxWidgetControl
oxShopMetaData
oxTag
oxTagCloud
oxTagSet
oxTheme
oxTsProduct
oxTsProtection
oxTsRatings
oxUtils
oxUtilsCount
oxUtilsDate
oxUtilsFile
oxUtilsPic
oxUtilsServer
oxUtilsUrl
oxUtilsView
oxUtilsXml
oxVariantHandler
oxVatSelector
oxView
oxAdminView
Actions
Admin_Content
Admin_Guestbook
Admin_Links
Admin_News
Admin_Newsletter
Admin_Order
Admin_Payment
Admin_Pricealarm
Admin_Start
Admin_User
Admin_Wrapping
Article
Attribute
Category
Category_Update
Country
Delivery
DeliverySet
Diagnostics
Discount
Dynscreen_Local
Efire
EFire_Downloader
EFire_List
Language
Login
Manufacturer
Module
Navigation
oxAdminDetails
Actions_Main
Adminguestbook_Main
Adminlinks_Main
Article_Attribute
Article_Crossselling
Article_Extend
Article_Files
Article_Main
Article_Overview
Article_Pictures
Article_Review
Article_Stock
Article_Userdef
Article_Variant
Attribute_Category
Attribute_Main
Category_Main
Category_Order
Category_Pictures
Category_Text
Content_Main
Country_Main
Delivery_Articles
Delivery_Main
Delivery_Users
DeliverySet_Main
DeliverySet_Payment
DeliverySet_Users
Diagnostics_Main
Discount_Articles
Discount_Main
Discount_Users
dyn_interface
DynExportBase
GenExport
GenExport_Do
GenExport_Main
VoucherSerie_Main
VoucherSerie_Export
VoucherSerie_Generate
GenImport_Main
GenImport
Language_Main
Manufacturer_Main
Module_Main
Module_SortList
News_Main
News_Text
Newsletter_Main
Newsletter_Plain
Newsletter_Preview
Newsletter_Selection
Newsletter_Send
Object_Seo
Article_Seo
Category_Seo
Content_Seo
Manufacturer_Seo
Vendor_Seo
Order_Address
Order_Article
Order_Downloads
Order_Main
Order_Overview
Order_Package
Order_Remark
Payment_Country
Payment_Main
payment_rdfa
deliveryset_rdfa
PriceAlarm_Mail
PriceAlarm_Main
SelectList_Main
Shop_Config
dyn_econda
dyn_trusted
dyn_trusted_ratings
Module_Config
Shop_License
Shop_Performance
shop_rdfa
Shop_Seo
Shop_System
Theme_Config
Shop_Main
Statistic_Main
Statistic_Service
sysreq_main
Theme_Main
Tools_Main
User_Address
User_Article
User_Extend
User_Main
User_Overview
User_Payment
User_Remark
UserGroup_Main
Vendor_Main
VoucherSerie_Groups
Wrapping_Main
oxAdminList
Actions_List
AdminGuestbook_List
Adminlinks_List
Article_List
List_Review
Attribute_List
Category_List
Content_List
Country_List
Delivery_List
DeliverySet_List
Diagnostics_List
Discount_List
Dynscreen
Dynscreen_List
Language_List
Manufacturer_List
Module_List
News_List
Newsletter_List
Order_List
List_Order
Payment_List
PriceAlarm_List
PriceAlarm_Send
SelectList_List
Shop_List
Statistic_List
sysreq_list
Theme_List
Tools_List
User_List
List_User
UserGroup_List
Vendor_List
VoucherSerie_List
Wrapping_List
SelectList
Shop
Statistic
sysreq
SystemInfo
Theme
Tools
UserGroup
Vendor
VoucherSerie
oxcmp_basket
oxcmp_categories
oxcmp_cur
oxcmp_lang
oxcmp_news
oxcmp_shop
oxcmp_user
oxcmp_utils
oxUBase
Account
Account_Downloads
Account_Newsletter
Account_Noticelist
Account_Order
Account_Password
Account_Recommlist
Account_User
Account_Wishlist
aList
ManufacturerList
RecommList
Tag
VendorList
Basket
ClearCookies
Compare
Contact
Content
Credits
Details
MoreDetails
RecommAdd
Review
Download
ExceptionError
ForgotPwd
GuestBook
GuestbookEntry
Invite
Links
News
Newsletter
order
oxWidget
oxwArticleBox
oxwArticleDetails
oxwBetaNote
oxwCategoryTree
oxwCookieNote
oxwCurrencyList
oxwInformation
oxwLanguageList
oxwManufacturerList
oxwMiniBasket
oxwRating
oxwRecommendation
oxwReview
oxwServiceList
oxwServiceMenu
oxwTagCloud
oxwVendorList
Payment
Pricealarm
Rss
Search
Start
Suggest
Tags
Thankyou
Tpl
User
Register
Wishlist
Wrapping
oxViewConfig
oxSysRequirements
OxSystemEventHandler
oxUtilsObject
oxUtilsString
PdfBlock
PdfArticleSummary
PHPMailer
oxEmail
TCPDF
oxPDF