Magic Leap is conspicuously but rightly missing from your list, because they're a fraud that's nowhere near releasing a real product, and whose bullshit is besmirching and dragging down the reputation of AR.
Google has at least three AR products: Glass is still in business for enterprise, Tango tablets and phones are finally out, and future versions of Daydream are supposed to be capable of inside-out tracking via an AR tracking system.
Microsoft has the HoloLens, which technology they have also cannibalized for a series of headsets they are dubbing "Mixed Reality" for the depth camera pass-through they are performing.
HTC is supposedly developing their own AR/inside-out system.
Leap Motion, Intel, Qualcomm, Meta, and Magic Leap are still considered in the running, with varying levels of believability.
And then there are a slew of different companies that are doing AR solutions with either the standard webcam (e.g. Facebook, Snap, Vuforia, Wikitude) or their own, standalone camera (e.g. Zed, Occipital).
I don't count Google. Google is an unreliable product company. They kill half their products and the other half are absolute tire fires. You may like android, but it's ugly AF compared to iOS which is far from perfect. Gmail needs some major work on the interface. Speaking of interfaces have you seen their tv app? Kill me now.
I have no love for Google. I certainly don't trust them enough to purchase a product they make for fear of them killing it. Plus they mine everything they can get access to for who knows what ends. "So for those reasons, I'm out".
MS.... Meh. No one has come to expect great things from them.
