Asset charts
Counts come from the search index (SearchAssetNodesAsync with aggregations); each chart is one bucket-terms aggregation.
Assets by status
Assets by type
Assets by manufacturer
Assets by certificate status
Certificate.Status
Assets by service level of their agreement
CoveredBy → ServiceAgreement.ServiceLevel
Assets by work order type
RequiresVisit → WorkOrder.WorkType
Assets by work order status
RequiresVisit → WorkOrder.Status