This is #4 "spent on wages" no?
We already tax wages. A graduated income tax targets specifically the problem you are flagging here. Taxing corporations exclusively would do away with this.
If you're making an equity argument, why not argue for the opposite of what you're saying: reduce corporate taxes to zero, then make up for it by taxing only the highest earners' wages? Not advocating for a policy position here, just pointing out that the argument in the GP post is precisely that they lack of those granular policy levers is a drawback of taxing corporate income. Policy levers which could be used to nudge the income gap down by taxing the "excessive" executive comp at a higher rate, for example, don't work if you collect that tax revenue as a monolithic corporate profits tax.