The truly wealthy do not care what the taxes on ordinary income are. If you really want to extract a lot of money from the .01 percent,
1. Raise the capital gains tax and make it steeply progressive. Or, tax all income including capital gains with AOC type brackets.
2. Raise the inheritance tax.
3. Cap deductions for charitable contributions.
4. Wealth tax.
(I am not saying we should do this, but if you want to really “soak the rich”, this is how you do it.)