So, why would a player want to use an X-Ray resource pack? There are several benefits to using these packs:

: Many servers use "Anti-Xray" plugins (like those found in PaperMC) that fill the underground with "fake" ore blocks. To a cheater, the world looks full of diamonds, but as soon as they mine them, they turn into stone, effectively ruining the advantage. Risks and Ethical Considerations

One of the most widely used packs; it is frequently updated for the latest Minecraft versions (including v1.21 and v26.1). X-Ray Texture Pack

Suddenly, Leo could see through the Earth. Hovering in the vast, empty void were veins of