Here's an article you may enjoy: https://en.wikipedia.org/wiki/Hidden_champions https://en.wikipedia.org/wiki/Hidden_champions It's not an answer to your ques

Here's an article you may enjoy: https://en.wikipedia.org/wiki/Hidden_champions https://en.wikipedia.org/wiki/Hidden_champions It's not an answer to your question but there are a lot of "sleeper comapnies" out there.