I disagree with a lot of these because of my therapist. I kinda agree. You can see it in fucked up families where one side physically attacks the other - they have a human punching bag of sorts, and so they express their anger by using that human as a punching bag.
Before expressing your anger, however, as per my therapists instructions, I find that acknowledging your anger is also an important step, just taking a moment to say (or scream) "this thing is making me angry". Especially if you're male.
Second, I propose expressing your anger physically via punching bag or screaming into a pillow or the such should be done sparsely as to not transform yourself into the titular "Kyle" who sustains on Monster energy drinks and punching holes in drywall walls.
A punching bag sounds like a solid choice, in my opinion, screaming into pillows I think would be less effective, although having not tried either, it's merely a hypothesis.
My brain is broken, so I deal with my anger by taking a walk and talking to myself, holding a sort of dialogue with myself. Most of the time it works. I do this because I can't "excite", for lack of a better word, myself physically too hard.