I don't bother to keep up with what's current. I can't even keep track of who's got real engineering chops and who is just a trademark bought at a bankruptcy auction.
There's not a lot of players left: Colquhoun (Bryston), Lenbrook (NAD), Masimo (Denon, Marantz), Paradigm (Anthem), Sony, Voxx International (Onkyo, Pioneer), Yamaha, and a few bit players.
It's practically an oligopoly like the Canadian chain restaurant business, where MTY Food Group and Recipe Unlimited line every food court or strip mall.