Mostly I'm implying that your argument doesn't hold weight. You don't throw someone in prison because if you don't there's a double standard with some other offence. You throw them in there because the crime they committed warranted it.
I'll play anyway for funzies though. First offence?
All 3 should be a non-bankruptable fine with a floor that also scales with historical earnings and wealth. I can't give specific numbers because I think it should be set at figures large enough to act as a suitable deterrent which I don't know and would need to research. Since in a scenario where I'm magically put in charge of the legal system I would have the means and incentive to do that research, I think that's fair on my part. Potentially some public shaming involving stocks and vegetable throwing depending on its cost effectiveness as a deterrent as well.
I imagine the fine amount would be far greater for the fraud though, which would help with the lack of proportionality.