There's not a single example of one of these businesses in the article
(None of those examples are on that list.)
I'd heard of Bobcat, De La Rue, Embraer, McIlhenny, Petzl, Tandberg (famous for reel-to-reel tape-recorders). I do think it's wonderful that the list includes a company known for "wristwatch hands".
Molex is a pretty well-known name because of the eponymous connector, but I'd never considered whether it might be a company.
I thought I knew "International SOS", but I actually knew "SOS International", another entity altogether.
It has a revenue of R$20m, which falls within the arbirary hidden-champion revenue cut-off of US$5b only due to the poor BRL-USD exchange rate right now.