In UploadWizard.config.php options for default licensing types are given as such:
// Possible values: ownwork, thirdparty, choice.
In fact, the page will not work with "ownwork" and gives this error:
TypeError: mw.UploadWizard.config.licensing.ownWork.defaults is undefined
However, it works fine with "ownWork". Presumably the same applies for "thirdParty".