There is diamonds under 0 when I uncheck diamonds

[QuentinNEP]

Hello, I tried the customized world function and it appears that when I uncheck all ores there is still diamonds under 0

Same version Minecraft and DataPack :

Here is my preset :

And when I check my world with xray for testing i got this :

[QuentinNEP]

I tested with 1.20.1 there's no diamonds but there's iron