[nunobrito]

On my side those cases are categorised as "Public source" and the respective license terms are then labelled as freeware for most cases, as a sub-variant of Proprietary license types. The other two variants would be Purchase or Subscription.

From a licensing compliance/verification perspective, being OSI approved is a good help to guide developers and reduce the effort of processing the applicable terms. For the auditor itself, the OSI stamp is OK but not something critical.

Looking better, we simply don't even use the terms Open Source nor FOSS on our procedures to be inclusive of the commercial/closed 3rd party products.