I suppose there's some marginal value in learning that you should talk the talk and walk the walk to better fit into that culture (and that will open up some opportunities for you), but merit is not how 90%+ of the world works...
I would extend this a bit. This could be people you worked with, not necessary to be any famous people with a published biography. Check their profile, see what kind of training, education, and jobs they had will help you understanding how get to where they are at.
Everyone on linkedin has a biography.
LinkedIn provides a biography of sorts for millions of professionals. Do a little Googling and possibly even reach out to some people and you can figure out how just about anyone got to where they are today.
Someone without "wealth" may easily form friendships, have a great family, and fulfillment there. A "wealthy" person may be great at creating wealth, but poor at creating fulfillment.
For example... > Find the biographies of people whose job you’d like to have and figure out how they got it. You can effectively reverse engineer their career path.
If you're famous enough to warrant a biography(and I'm assuming an actual biography, not just a wiki article) then odds are pretty good you came from a very privileged background. Not sure how you can reverse-engineer being born into that.