What are the Best Automation Tools for Desktop Applications in 2020

Hi Team, May I know the best automation tools/Framework available in 2020 to test Desktop based applications ex. Windows forms, Wpf, Silverlight etc, Also May I know if anyone got an opportunity to work on Katalon Studio, FlaUI, White Framework, Which is the best framework among these three frameworks for Desktop application automation & CI/CD including performance. Thanks Khaja Moizuddin