My first impression is about funding. Where did the Trump insurrectionists find the money to carry out their plans. Few were from the DC area. Many flew to be a part of the insurrection. They had gear, carpentry supplies, guns, bombs, etc.
I would think any monies involved, even personal monies need to be investigated and documented. In the 2016 elections money flowed like water, especially in the case of the NRA. What is to say there is not a foreign government involved in some way? Even at the personal level.