One just came out. Only one on the market I know of. It's called the Unihertz Titan 2, and I'm typing this comment on one. It's got a blackberry style keyboard and runs pretty close to stock android. I recommend swapping their default keyboard out with swiftkey, though the default one isn't terrible - swiftkey just gives me a few conveniences like emoji suggestions. It has play services, so it works.
Yes, but that requires carrying a separate device, which makes it too inconvenient to use casually. I want the keyboard to be built into the device itself, like you used to be able to get.
This. Much of my typing speed and accuracy comes from feeling the positions of the keys. I can't do that on a touchscreen phone. They are so error prone and frustrating. Autocorrect is almost useless.