Correct - there is NO equivalence between these riots and JSO.
But not in the way you think.
See, the people arrested were not conspiring to riot which is why they haven't been charged with conspiracy. If there was any group of leaders behind it, then they were nowhere near these riots. The ones arrested were used by such people.
But JSO 5, on the other hand, WERE the leaders who planned a disruption so large the Judge made clear it was a threat to the maintenance of law and order.
More to the point, JSO 5 were caught live on Zoom video chat by a journalist who then informed the police. Without that key piece of evidence, JSO 5 would have had a much lighter sentence.
You don't need to minimise JSO's leaders' crime in order to make an argument about the riots. That's exactly what you've been doing rather unapologetically which is blatantly wrong.
These are two different cases with different levels of evidence involved. If you wanted to focus on the riots, you should have done that and left JSO out of it without trying to minimise their conspiracy charges and convictions.