Fwiw the term "libertarian" as used on these compasses is referring purely to the social scale, and not the economic one. So an American capital-L "Libertarian"* should be right-libertarian. But left-libertarians are also possible, being of the views "hey, everyone should have the resources to receive good healthcare, education, and a safe living space", but also "people should be able to do what they want to their own bodies, so long as they aren't impacting on others".

* using it here strictly in its original conception, rather than in the modern sense of "far-right Republican trying to hide behind a friendlier sounding label"