Dude straight up lied to everyone. Most blatantly corrupt incompetent fraud in US history. Just because he's narcissist enough to not care doesn't make it better. And yeah, lots of mistakes to fix that led to McConnell / Dumpty. Mainly erosions of separation of powers. At least the other presidents you mentioned tried to stick to what they campaigned on and didn't try to light fire to the government for personal gain.

I'm not sure "honest" is the right word. Trump loves to lie and make stuff up. It's just usually blatantly obvious, while Trump is also seemingly unable to keep anything secret. Maybe "transparent" is the right word. Just not on purpose