Well, I wish that were completely true, because cmd+backtick only cycles through the windows of the application, while cmd+tab lets you select the application you want.
From Ubuntu (or maybe rather Ubuntu's default desktop environment?) I am used to cmd+backtick allowing me to select the window - I did find an application that does enable this behavior [1] but I wonder what else is out there. I used to use Hyperswitch but it doesn't seem to work on Catalina