None of that is interesting to average American, and no minds will be changed as long as Trump (via Twitter and his minions in the House and Senate) can play "it was tit-for-tat, "they did this and that" / "hoax" / "plot" / "treason" / "corruption" / "I am the good guy here, draining the 'swamp' and protecting the country from the 'evil deep state'" etc.
He's only happy to play "victim" and "defender of the faith and fatherland" and will proudly wear the impeachment "badge" after "exoneration" by the Senate's Kangaroo Kourt - that's his kind of show.
The real / only thing that will truly hurt him, personally (his psyche and "reputation / resume") - and will make a serious dent in hearts and minds of average people, including some non-cult Republicans - is if Democrats will expose his personal financial crimes, graft, corruption, money-laundering (especially on behalf and the benefit of Russian oligarchs and Saudi "princes"), lack of personal wealth and botched deals, which he uses to offload losses onto other people, while writing them off on his own tax returns (part of money-laundering schemes), before and after him "taking" the office (emoluments).
THAT would not be a game that "great business can turn around and point fingers on others, or that it would work or matter if he tries to play "I know you are, but who am I?"
Until then, have popcorn, but "you investigate me for political acts, I (Barr) investigate you for political acts" will be as productive as "Mueller investigation" - it doesn't help that on the other side there are Clintons, both corrupt and life-long grifters themselves.
These two clans should be married, in fact Ivanka and Chelsey used to be best buds.