The good old Traditional Publishing world
If you are lucky enough to get published by the big 5 traditional publishers, you will fall into the category of 80% of the book sales each year, but only 3% (estimated) of books (titles, not copies) published each year. The big 5 are:
Penguin Random House
HarperCollins
Simon & Schuster
Hachette
Macmillan
https://BHpubs.com