The real problem is that capitalism
already has mechanisms to make these lists, but they would be a boring read.
30 under 30 in Finance? Build a list of the top investment banks, PE/VC shops, Hedge Funds, etc. and take the people under 30 with the most senior titles.
30 under 30 in Retail/Ecommerce? Build a list of the fastest growing marketplaces/brands over $Xmn in sales and take the founders under 30 with the highest ranking.
etc. etc.
But then you get a bunch of boring people who work 80 hour weeks and don't have time for your photoshoot/interview.