This may do what you want - it was just published in the app store today: Enum Selector
Hope that helps,
Same question has been asked here: https://forum.mendix.com/link/questions/87512
See the sollution in that post.
I tried using the widget Enum Selector in my project 6.10.10, but it did not work properly. When I tried to display one enum value of the enumeration, the widget showed the enum value double.
I will have to try something else.