The Justice Department announced election-crime charges in three releases this fall: 28 on Oct 19, 48 on Oct 26 and 63 on Nov 2. That adds to 139 announced defendants.
The Oct 26 release repeated all 28 Oct 19 defendants, so the unique count is 111 people. By DOJ's own descriptions, 105 of them (94.59 percent) are lawful permanent residents, 5 are illegal aliens and 1 is described as neither.
On Nov 2 alone, 58 of 63 were described as lawful permanent residents. That release's headline line says "including four illegal aliens" and does not total the green-card holders. Attorney General Todd Blanche's quote in it calls the charges "the largest surge of voter-fraud arrests since President Trump returned to office."
The charged conduct is alleged. DOJ alleges many defendants claimed citizenship on registration forms. Under 18 U.S.C. 611, voting by a noncitizen in a federal election carries up to one year in prison, and section 611(c) provides a defense for some people who reasonably believed they were citizens. DOJ's releases do not say whether any defendant raises it. All defendants are presumed innocent.