Some blocks like diorite, dripstone, gravel, granite etc are generating till Y= -10(In very rare cases) after that there is only stone generating
This is one of the caves & cliffs update feature not a bug.
Thanks
All the screenshots above Y= 0 are to represent/show that every thing till Y= 0 is generating properly but below Y= 0 there are only some ores and stone generating.
And I have also found Lapis lazuli ore generating between y= 58-50
I will add more screenshots at early as possible the lush cave Screenshot was to show that every thing like cave biomes, deepslate, tuff, gravels, granite, diorite etc are generating properly till Y= 0 but from Y= -1 only there is stone and some ores generating.
The issue is still present in 1.19.0, please fix it.