Ore Generation has become much more complicated since you last suggested changes to it. At least for the Overworld, where the Rock Layer Generator is in effect. You can still control the old type Worldgen with the Configs, but the new Rock Layer Generator is quite a bit more complicated and not really configurable apart from turning the whole thing ON/OFF.
The Reason for the Rock Layer Generator being not configurable itself is because I couldn’t figure out how to turn its functionality into a Config at all.
As for the older Ore Gen Type from back in GT5, that is still configurable just like before.