Yes, medicine, law, engineering and most typical industries.
You can earn a good living as an average engineer, doctor, or lawyer, but obviously won’t earn millions unless you get to the top level.
In contrast, the average author, musician, and YouTuber earns less than minimum wage and need a second job to enable them survive while they hope to strike it big with their hobby (most of them won’t at the end)
Basically any normal job. There are tiers within those normal jobs but assuming some base level of competence, it's mostly not the delta between Taylor Swift and someone playing for tips at the local bar on weekends or doing Tik-Tok.
Mechanics, plumbers, doctors, nurses, engineers, electricians, landscapers, elevator installers, accountants, lawyers, air traffic controllers, pilots, architects, HVAC installers,
Sure you can find examples in every industry where few are paid far more than average or norm in that industry, but nothing like the spread you find in pure popularity based industries like entertainment be it professional sports, music, acting, YouTubers, streamers, authors, poets, etc.
More importantly the divide comes when you have something that can be infinitely reproduced at marginal or no cost (software, videos, books).
In general even the software world is "order of magnitude or so" between top performers and everyone else, but there are still outliers where an indie developer goes on to sell millions.
What's interesting about the author world is you can perpetually support yourself on advances as "mediocre but not complete failures" if you can write enough. And who knows? Maybe one day it'll hit gold and your back catalog will become valuable.
I think there's a little ambiguity in the question here, between stuff like "what is the distribution of different books by sales" versus "what is the distribution of companies by market-share." (To illustrate the difference, imagine a world where 99% of all books were sold by UberPublisher but almost every book-title in their catalog is equally popular.)
Movies/Entertainment? Agriculture? I don't know the answer but your comment prompted the line of thinking.