Simon Cozens spent some time writing a new typesetter called SILE: https://sile-typesetter.org/ On of the design goals was to be able to achieve exactly tha

Simon Cozens spent some time writing a new typesetter called SILE: https://sile-typesetter.org/ On of the design goals was to be able to achieve exactly that kind of line matching. IIRC it can ensure that lines on the front & back of a page line up exactly too; apparently this is important for bibles? Worth taking a look at. It recently acquired TeX style mathematics typesetting ability & has a small but active developer group.