Fallout 4 VR will arguably be the first true AAA VR game.
ED was a kickstarter game developed by fantastic indie studio Frontier. That's if you ignore the fact that ED, wonder as it is, is a game in much the same way Microsoft Flight Simulator was a game.
Star Trek: Bridge Crew is a tech demo.
Croteam themselves list Serious Sam as an indie game on their own site
Croteam - One of my personal favorite developers. Constantly updating and improving on their older games. Implementing Vulcan support etc.