A setup I've made this past year that helps me keep track of where all my garbage is bound. The main bar is spells bound to my gamepad, and the right is spells bound to my mouse's side buttons. Clean, with much space for various weakauras and information panels. My minimal rotation weakauras for hunter can also be found here .
The black bar at the bottom of the screen does not cover anything, and is explained further here: https://www.reddit.com/r/wow/comments/aoaaan/quick_addon_question_anyone_know_which_addon/
Works best with https://www.tukui.org/addons.php?id=1 !