On the Most Impactful Threads visual there is a "KPI" Column with Stars and Green Circles. These icons indicate if the thread was more impactful than the expected average for the community, company, or set any records in the tenant.
These icons give you a quick visual reference to find threads that performed better than average. For example this thread did not have the highest thread impact but set a number of records thread in its community in the tenafor this time period.
