High frequency biomes for the remaining ores

In experimental snapshot 4, it was made that copper ore is more common in dripstone caves. This means that:

Copper is common in dripstone caves, gold is common below mesas, and coal, iron and emeralds are common in mountains.

This leaves redstone, lapis and diamond without common spawning locations.

Redstone should spawn more commonly in lush caves

Lapis should spawn more commonly beneath snowy biomes

This means that when looking for any specific ore, you can go to a particular biome for better chances

Ideally, these biomes would have distinguished caves so it's easier to know where you are, but that would be a lot of extra work.