You’ve neatly summarized the public components of the investigation that are already massively incriminating. It is critical that very large changes be made now to have a hope of survival for the US as a nation and for homo sapiens as a species. Heavy duty time now.
The only workable option to get past this killing point is to remove, via forced resignation, Trump and Pence due to criminal indictments. Trumps sons, at least, should be tried and sentenced asap.
President Pelosi then will have the opportunity clean house while managing the passage of major structural changes to the constitution for state ratification. This should include the elimination of the senate, public financing for all elections, termination of the Electoral College, automatic voter registration for all citizens at 18, and implementation of automated electoral district mapping confirmed by a large committee of randomly selected citizens.
This is what it will take to survive this disaster. Then we can tackle the planetary climate disaster.