Role for sponsored content

Many countries require sponsored content to be easily identifiable by the
user. In many websites this is achieved with some flags near or inside the
sponsored content. I am wondering how this should be correctly handled from
an accessibility perspective.

I tried to look for some information on the topic, but haven't found much.
Is there any proposal to have a specific role for sponsored content? Are
there other suggestions to make it obvious to the user? An aria-label could
be used with a "sponsored" as first word, but this seems prone to
interpretations and may differ wildly in different languages or use cases.

In a way a role could also help assistive technologies to skip this content
if the user wants, and eventually lead also to better adblocking solutions.
On the other hand it may be too specific as a role and it could be hard to
handle nuances like "sponsored" vs "external advertising" vs "internal
advertising", etc.

What are your thoughts? Is there any active discussion around these topics
I can read?

Thanks,
- Andrea