Ya know, he mentioned in the OP techniques, which not a lot of people (including myself) included.
I topped all of my plants at least once, but most of them I topped for at least 4 main tops. I supercropped all of them (not sure if it "holds nutrients in the branch" or whatever, but man it helps give you thick strong stems). I would do it all the time, just kind of breaking them towards the outside to open them up for light.
With one plant (which is the method I like to do now), I only topped it once, but then I tied the two tops down so the branches would go up. It worked out well, bc topping costs time for recovery, and this way you can get tons of tops with only 1 cut, without the long pause caused by a fim. I fimmed almost all of my plants, but didn't do it properly and only 1 responded and got like 4 or 5, the rest only got 2 from the cut.
But yeah, the plant that I topped and then tied the tops down (l let each one get like a foot first), I built a little individual scrog screen out of a piece of remesh and some yOyo string. I dunno if that was the reason that single plant yielded half, and the other 5 plants yielded the other half, or if that plant just did so damn good bc it had yield in its genetics. I haven't used the scrog screen since then, but now that I think of it I definitely ought to try that again lol.