dicord unit frames
quatrz - casting bar
and the dps thing I think is part of mazzle UI, but you can get that info with performancefu/titan performance too.
3. status windows I believe it's called. all of this is detailed and laid out for you in the FAQ/addon list in-game.
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"You'd be surprised how many people violate this simple principle every day of their lives and try to fit square pegs into round holes, ignoring the clear reality that Things Are As They Are." -Benjamin Hoff, The Tao of Pooh