USB-C finally seems to be gaining traction as a display connection.
These are targeted for professional applications and all feature 4K IPS LCD panels with a native 10-bit color depth.
...and only have 100% coverage of the sRGB color gamut, so they’re not exactly up for photographic work.
In case you’re not satisfied with that, all three have VESA mounts, so you can change the base.
So in summary these monitors are each pretty good? That's neat I guess, but I agree with Xajel in that I want to see the REALLY cool stuff like HDR and options for 21:9 aspect ratios. The other day there was a guy saying that he wants to see next generation display port and HDMI. Those would be cool things too.
While I'm sure these monitors are fine, it's not easy to get excited about something that doesn't rock the boat.