The real page — every band, the real stylesheet, the real app.js — built once per artwork. The only differences between them are the artwork and the three values that place it.
Hero only, and desktop only — below 900px the page is exactly the control. An earlier build also put a faint strip of the same ground under #features and #pricing; that is gone.
No subject at all, and 21KB. The only one where the question is simply whether the paper should be white.
Cut-outs in the corners, nothing behind the type. The only one that adds a drawing rather than replacing the ground.
The control. No artwork at all — judge the other two against this rather than from memory.