The list you're referring to is there just to help find available projects, and it's far from being complete.
None of the items on that list is official.
The Swagger (and now OpenAPI) Speficiation is now managed by the Linux Foundation under the OpenAPI Initiative (OAI) organization (openapis.org). As a rule, the OAI does not endorse any specific project as an official one and does not directly deal with implementations.
So as far as it goes, there's not going to be an 'official solution'. It's up to you to choose the tool that fits your needs best.