Recommendations for an external USB-C monitor?

We are buying some extra monitors for developers and writers at work. It would be great to find a monitor that:
  • you can get power and video with one cable

  • is retina resolution

  • is 24-30"

I am looking at monitors like:
  • Dell UltraSharp 27 USB-C Hub Monitor - U2721DE

  • LG 27UD88-W

The LG Ultra 5K would also fit the bill and the camera is nice but probably beyond our budget.

Suggestions welcome!
Recommendations for an external USB-C monitor?
 
 
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