Twitter suppressed the NY Post's story on Hunter Biden's laptop right before the 2020 presidential election.
Calling a surgeon who performed sex reassignment surgery a criminal is what got Jordan Peterson suspended until he'll remove that tweet.
Trump was banned despite never telling anybody to go inside the Capitol building and even posting a video telling his supporters to go home.
Milo Yiannopoulos was banned for making fun of an actress.
Alex Jones was banned for posting a video where he insulted a CNN journalist.
Nick Fuentes was banned for repeated violations but Twitter has never made clear what the relevant tweets were.
These were just off the top of my head. I also remember tweets calling for mass reeducation of white people or the eradication of whiteness being allowed.