She's employed by Our World In Data. She is also a published author of printed books. Her substack does not have paid subscriptions enabled (or at least it did not as of last summer; see this post [1]). Our World In Data is funded by donations:

https://ourworldindata.org/funding

[1] https://hannahritchie.substack.com/p/reflections-on-substack

What narratives and framings does a blog post or “visualization tool” serve? What does their overall work? What’s their recurring ideological slant?

Could be wholesome and altruistic. Or it could be something else.

Someone can be an honest ideologue (useful idiot) without being directly funded by someone shady.