Salesforce Duplicate Management — Fuzzy Match on First Name Doesn't Detect Expected Duplicates

When using Fuzzy Logic with First Name in a Salesforce Duplicate Management Matching Rule, not all name variations that exceed the Jaro-Winkler threshold will trigger a duplicate match. This occurs because fuzzy logic relies on pre-captured name patterns on the matching server — the detection is not based solely on the numeric score.
As you can see in the examples above, all of these records exceed the Jaro-Winkler threshold. However, only half of these records will detect the duplicates based on the above matching rule. The reason for this is due to scenarios where expected matches will return a negative result if the name variation pattern was not already captured on the matching server. Fuzzy logic is not meant to be exact.
Ideally, additional matching criteria should be put in place, such as address fields. This ensures that duplicate matches are returned from the server when utilizing fuzzy logic.