The third is irrelevant as well as a pipe dream. It’s also been on lists for decades.
I’m especially fond of the first, except they’re not monopolies. That’s the fact that protects them from the monopoly laws. So breaking them up is a good idea but the mechanism is a bit trickier.
The second is solid and reasonable, as is the fourth.
The fifth is in some ways trickier than breaking up the banks. Not least is the fact of why bonuses were used this way in the first place. It was to cause the top executives to be invested in the companies, to stop the habit of buying companies to destroy them.
They’re a nice starting place, but the problems in implementation are worth noting.