While creating a list view for opportunities if the filter chosen is “My Opportunity Teams” then this list view will list these opportunities: 

Opportunities owned by that user even if that user is not a member of the Opportunity Teams of those
opportunities 

Only those opportunities owned by that user in which he is also a member of the Opportunity Teams of those opportunities 

Opportunities owned by that user or any other user in which he is a member of the Opp