I was curious as to exact numbers.
Here is what I found:
1003 people were charged and arrested.(as of Feb 16 2023)
476 pleaded guilty and entered plea deals (as of Feb 16 2023). This is very common especially if they can’t make bail or just want to get on with it.) It is especially common with black defendants. So not anything special to do with their being J6 rioters. As to not being guilty of anything, there presence inside the Capitol that day is evidence enough that they are guilty of something.
260 of were charged with more serious crimes. (as of Jan 2023)
Roughly 350 suspects remain wanted.
According to this, most were released while waiting for their cases to make their way through court. A small portion who were charged with more violent crimes were jailed while awaiting trial or a plea deal. This seems like pretty normal protocol.
April 2022
Most of the people arrested were allowed to go free while their cases worked their way through court. Judges decided a smaller group — often those facing the most serious charges or those who prosecutors worried might flee the country — should be locked up while they awaited trial. That decision presented authorities with a challenge: Where exactly should the government hold them?
Some ended up scattered in jails close to their homes. But a few dozen (the precise number has fluctuated) were incarcerated in the city where the Jan. 6 attack took place, in Washington, D.C.'s Correctional Treatment Facility. The District's Department of Corrections decided for the inmates' "own safety and security" to detain all of the Jan. 6 defendants in just one part of the facility, a section known as C2B.