Examining the connections between Trump and the Republican Party is on-going source of neck-dislocating head shakes for many people. There is a persistence to it that defies logic when one examines it from the standpoint of normal political calculus.
If you want to know what crimes Trump has committed or is committing now—just because he's no longer in office does not mean he stopped being a criminal—simply make notes of what he accuses others of doing.