Hi @Walker Paul (NSFT) ，
Regarding the Spoof Mail Report, you can try selecting
Filter under the chart to configure the filters, this can help exclude some of the unnecessary data.
For more details, you could refer to: View email security reports in the Microsoft 365 Defender portal -Spoof detections report.
In addition, aside from the Spoof Mail Report, you can also take a look at the other ways mentioned in the link below which can help manage spoofing and phishing:
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