Three components that can be used to modify the user experience in the Order Summary detailpage are:

Tabs. Tabs are a type of component that allow users to switch between different views or subpages on a record page. Tabs can contain other components, such as charts, reports, or custom components, that display different information orfunctionality related to a record. The administrator can use the Lightning App Builder to add and customize tabs on the Order Summary detail page to give users more options and flexibility.

Accordion. Accordion is a type of component that allow users to expand and collapse sections of a record page. Accordion can contain other components, such as fields, related lists, or custom components, that display different information or functionality related to a record. The administrator can use the Lightning App Builder to add and customize accordion on the Order Summary detail page to give users more control and visibility.

Related List-Single. Related List-Single is a type of component that displays a single related list for a record. A related list is a list ofrecords that are linked to another record by a relationship field, such as lookup or master-detail. The administrator can use the Lightning App Builder to add and customize related list-single on the Order Summary detail page to give users more access andcontext.

Verified References: https://help.salesforce.com/s/articleView?id=sf.lightning_app_builder_components.htm &type=5