I saw in https://opengameart.org/content/oga-by-30-faq that can be created OGA 4.0 license when fsf and debian will approve it

Links that says it is approved by them:

https://www.fsf.org/blogs/licensing/cc-by-4-0-and-cc-by-sa-4-0-added-to-...

https://wiki.debian.org/DFSGLicenses#Creative_Commons_Attribution_4.0_In...