Median? Probably software. Where I live, a mid-skill software developer makes as much money as a manager in accounting or the owner of a small indie cafe. A software manager in a good (not great) company makes top 10% of income.
High risk, high returns? Software & startups. The risk isn't that bad - in terms of returns/failure ratio, you'd probably make more off a million dollar startup than you would trying to get a job at Netflix. It's just a question of what you enjoy.
What kind of software? In my experience, they all pay as well, unless you do something easy like WordPress or something dumb like Cordova. So just pick something.
Don't like learning new frameworks? Do law. It's the same thing as programming but your frameworks are hundreds of years old.
If you can't hit median, then aim for something you can be the best at. Not top 10%, but best. It can be a mix of skills. Something like busking+omegle+YouTube can pay well.