Creating a segmented button group with label

Can we get a screen reader to announce the segmented button group's number of elements and label?

basic example

Use a group with label

Placing the buttons in a div with role="group" and aria-label="Type styles" will announce the buttons are in the Type style group, But it doesn't tell the number of items in the group.

Place the segmented button into a list

Placing the buttons in a list will announce the number of list items, not necessarily the number of buttons in the group.    

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