Is your feature request related to a problem?
Only one ore can be set per vein

Describe the solution you'd like
Being allowed to specify multiple ores, like Iron Ore, Dense Iron Ore. Preferably with additional weight values for determining how likely each ore can be in a given vein
e.g.

{

  "ore": {

    {
      "name": "minecraft:gold_ore",
      "wieght": 85
    },
    {
      "name": "minecraft:diamond_ore",
      "wieght": 15
    }

  }

}

Describe alternatives you've considered
Currently the only alternative is having different entries spawning the ores separately. Which means they won't be in the same vein

Additional context
Sometimes we may want ores spawning together for thematic reasons, e.g. a modpack may want iron and copper found together. This feature could help give extra themes/lore to modpacks and cues/hints for players experiencing these configurations

I like this, will look into adding all of your Feature Requests in the next big update.
I usually bundle up huge changes into a single update when changes will alter the .json files and could break it for other packs relying on the mod.

Moved all feature requests to Discussions: #65