I could not pinpoint to a specific keyword of it. But,
I was looking for a control in UWP app that supports down to version 14393
A radial control like in lots of games that can be select with L or R on a game controller. (eg. Grand Theft Auto V weapon selection)
I found something similar which is Dial controller, but it only works with Surface Dial
You could refer RadialGauge XAML Control that comes from Community Tool Kit.
For the source code you could refer this.