Below illustrates how to map GCP services between reports:
https://apps.cloudhealthtech.com/pulse/gcp-cost-summary
Cost History V2 report
https://apps.cloudhealthtech.com/olap_reports/gcp_cost/history-v2
'By Service' in Pulse report -> maps to 'Cloud Products' in Cost History V2
'By Service Item' in Pulse report -> maps to 'Product Categories' in Cost History V2