Hello, I have a question regarding Baritone and other mods. I was wondering if it's possible for the mine feature of Baritone to work with other mods. For example, would it be possible to mine Ruby Ore from the Biomes O' Plenty mod. If there is a way, then what is the command for it to work?

You can do this:

#mine modid:blockid

so in your case:

#mine BiomesOPlenty:gems:1

should work