I've compared the bias from X and other platforms and you generally get both sides of the argument. Blue sky bans anything not left-leaning. This is evident by first-hand accounts and the fact that you never see both sides of an argument.
Mind sharing your methodology? I doubt a single person could accurately determine this without a very well laid out process.
Every study I’m finding, even when specifically searching for left biases, concludes Twitter is very right leaning. Which makes sense: Its owner is very openly right-wing, repeatedly posts right-wing-leaning fabrications, has shown to be thin-skinned and actively amplifies his own account and those who spout right-wing views, so it’s no wonder most who remain are those who agree.
Bluesky is a _hostile environment_ for the far-right, in that people won't be nice to them, and might put them on blocklists, but they're absolutely allowed.