I'm of the opinion that some charges are close enough that they don't have be be actual insurrection. For example I believe some of the Jan 6th defendants have been charged with crimes that were classified as acts of terrorism against the government.
Now I don't know about you but I would conclude that something classifed "An act of terrorism against the government" is close enough to insurrection to qualify with the spirt and the original meaning of the 14th amendment.
The head of the proud boys has been convicted of "seditious conspiracy"
US code defines seditious conspiracy as "If two or more persons in any State or Territory, or in any place subject to the jurisdiction of the United States, conspire to overthrow, put down, or to destroy by force the Government of the United States, or to levy war against them, or to oppose by force the authority thereof, or by force to prevent, hinder, or delay the execution of any law of the United States, or by force to seize, take, or possess any property of the United States contrary to the authority thereof, they shall each be fined or imprisoned not more than 20 years, or both."
Now if you ask me that sounds close enough to insurrection. Remember that the 14th amendment was written in the 1860's. If you read that definition to a person in the 1860's they would probably tell you that was the same thing as insurrection.