List of container layout names in Magento 2 Community Edition

container-layout-names.md

• actions_apply_to
• admin.scope.col.wrap
• adminhtml.block.report.product.lowstock.grid.container
• adminhtml.catalog.product.set.edit.wrapper
• after.body.start
• alert.urls
• assign_products_container
• available_sort_by_group
• backend.page
• backend.session.activity
• before.body.end
• bookmarks
• bundle.options.container
• bundle.product.options.wrapper
• cart.discount
• cart.summary
• category.product.list.additional
• category.view.container
• checkout.cart.container
• checkout.cart.empty.widget
• checkout.cart.form.before
• checkout.cart.items"
• checkout.cart.methods
• checkout.cart.noitems
• checkout.cart.totals.container
• checkout.cart.widget
• checkout.header.container
• checkout.header.wrapper
• checkout.multishipping.overview.items.after
• cms_footer_links_container
• columns
• columns.top
• columns_controls
• compare-link-wrapper
• conditions_apply_to
• container_backorders
• container_deferred_stock_update
• container_enable_qty_increments
• container_group
• container_is_in_stock
• container_manage_stock
• container_max_sale_qty
• container_min_qty
• container_notify_stock_qty
• container_qty_increments
• content
• content.aside
• content.bottom
• content.top
• customer.form.register.fields.before
• customer.login.container
• customer.newsletter.form.before
• customer.wishlist.buttons
• date_group
• default_sort_by_group
• div.sidebar.additional
• div.sidebar.main
• filter_price_range_group
• footer
• footer-container
• form
• form.additional.info
• form.buttons
• global.notices
• google_experiment_container
• header
• header-wrapper
• header.container
• header.inner.left
• header.inner.right
• header.panel
• header.panel.wrapper
• js
• left
• legal
• legal.copyright
• legal.system
• listing_top
• login.content
• login.footer
• login.header
• main
• main.col
• main.content
• main.top
• menu.wrapper
• messages
• messages.wrapper
• minicart.addons
• notices.wrapper
• notification.window
• notifications
• order.actions.container
• order.success.additional.info
• page.bottom
• page.bottom.container
• page.breadcrumbs
• page.content
• page.formkey
• page.main.actions
• page.main.container
• page.menu
• page.messages
• page.top
• page.wrapper
• payment_additional_info
• payment_methods_after
• payment_methods_before
• product.info.bundle.extra
• product.info.bundle.options.top
• product.info.configurable.extra
• product.info.details
• product.info.extrahint
• product.info.form.content
• product.info.grouped.extra
• product.info.main
• product.info.media
• product.info.price
• product.info.simple.extra
• product.info.social
• product.info.stock.sku
• product.info.type
• product.info.virtual.extra
• product.review.form.fields.before
• record
• right
• root
• sales.order.history.extra.column.header
• sales.order.history.info
• side.col
• sidebar.additional
• sidebar.main
• store_view_labels
• submit_after
• submit_before
• theme_ua_regexp
• top.container
• url_key_group

Checkout shipping page par Order Summary ka container name kya hoga.