@jacob >Note the deliberate use of lower case. I’m not referring to Open Source™ as defined by OSI, nor to Free Software™ as defined by the FSF1. I mean these terms in the broadest, most inclusive sense: “software with source code that I can read and modify and release variants of, perhaps under some conditions
I suggest against trying to redefine "open source" for the 74th time.

The term you seem to want is; "source-available".