If you use a jigsaw structure like I did to add end temples in my datapack they generate in the void no matter what settings you use and these files all from 1.19 or the snapshots so they may work if so I will redo it to work when I can my laptop is broke so that may take some time the cords of world gen is any were at y 0 outside the main island. Laptop broken so a new picture is not possible right now