At place like Reddit - political terminology is thoroughly broken. But Bluesky takes the cake when it comes to words relating to politics. Because of the site's nuclear blocking/muting - people say crazy stuff and will silence anybody who points out that they are nearly speaking gibberish. So they just keep saying it.

A "leftist" could be what we would call a typical lib who says things like "Hostile architecture is horrible!" but will never vote to change that.
A "progressive" is probably a lib.
Anybody who loudly proclaims they are a liberal is likely to the right of Schumer.
I use a labeler service so if somebody follows a pundit like Jonathan Chait - I assume the Bluesky person is effectively a republican no matter what nonsense descriptors are in their bio.

And next year - many of them will say people have gotta vote for the ex-CIA ghoul or ex-military ghoul or centrist ghoul because "democracy is on the line."