Earlier quoted context omitted.
https://www.newsweek.com/activists-accuse-elon-musk-banning-... mentions a few, although there are far more.
You need to be more specific - he wasn't banning George Takei or Occupy Democrats. He banned ANTIFA accounts that were being used to plan "direct action", ie: riots. Something that was previously against Twitter's TOS, but it wasn't being enforced specifically against ANTIFA accounts because Twitter employees were sympathetic to the cause.
"As the Los Angeles City Councilmember Mike Bonin noted on Twitter, the suspended users include Chad Loder, an antifascist researcher whose open-source investigation of the U.S. Capitol riot led to the identification and arrest of a masked Proud Boy who attacked police officers. The account of video journalist Vishal Pratap Singh, who reports on far-right protests in Southern California, has also been suspended."
"All four accounts had been singled out for criticism by Andy Ngo, a far-right writer whose conspiratorial, error-riddled reporting on left-wing protests and social movements fuels the mass delusion that a handful of small antifascist groups are part of an imaginary shadow army called “antifa.” In a public exchange on Twitter on Friday, Musk invited Ngo to report “Antifa accounts” that should be suspended directly to him."
https://theintercept.com/2022/11/29/elon-musk-twitter-andy-n...