You can accomplish this through Access Rules on your entity (this will limit access throughout your app) or through an XPath restraint on the datagrid (which will limit the access for that datagrid only). If you have an unusual case, you can also source a datagrid with a microflow and, in the microflow, return only the Orders you want the Stakeholder to see.
All of these approaches depend on the association between StakeHolder and Order entities. This should be either a 1 to many (if your use case is that only 1 stakeholder has access to each order) or many to many (if your use case is that more than one stakeholder can have access to each order). Once this association is created (and populated during the order creation/entry process), you can use it in any of the 3 approaches described above.