I find interesting that HBO, a US TV network, has become a worldwide brand name in a way that CBS,[1] NBC, and ABC didn't; only BBC has also transcended its home country this way, and did so with a 50-year head start. To global audiences HBO is associated with
Game of Thrones,
The Sopranos, and other top-quality TV;
The Last of Us seems to be on its way to adding to the list.
Outside TV networks, I would count Disney, Netflix, Apple, and Amazon as also having global heft as brand names. None except Netflix has yet gained worldwide recognition for their shows and brands, yet, though (not even Disney and The Mandalorian).
[1] Cf. the rebranding of CBS All Access to Paramount Plus