Why floating floors make noise for different reasons
Laminate and luxury vinyl plank are usually floating floors, which means they are not fastened to the subfloor at all. The planks lock to each other and the whole assembly sits loose on an underlay, free to expand and contract as a single sheet. That design solves the seasonal movement problem that plagues nailed hardwood, but it introduces its own failure modes. If the expansion gap around the perimeter was left too small, the floor has nowhere to go when it expands and it buckles or peaks at a seam. If the subfloor beneath is not flat, the planks bridge a low spot and you get a hollow, clicking sound underfoot where the floor deflects into the void. If a click joint has separated, the planks move against each other and you hear it as a distinct tick rather than the groan of a nailed floor. Glue-down vinyl is different again, and there the usual problem is a bond that has failed in one area, often from moisture below.