You can do this using the clone fields. You create a field group that has all of the fields for a layout. These fields are not in flex fields, they are just fields. The you create a field group with a flex field for each different place you want the flex field and you create layouts, the layouts all have a single field and that is a clone field where you clone all of the fields of your other groups.
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ACF PRO’s Flexible Content field allows you to create smaller pieces of UI and compose them into whole flexible patterns. In our latest article, we show how to use it to create swappable site sections and integrate it all in a theme.https://t.co/ZRocH8oJSp