I decided to add Advanced Rocketry to my pack, and it uses Titanium, which comes from Rutile.
Is there a chance that you would add support for this? 😄 To begin with, I believe I will just make a custom gen using your config, but it would be awesome to get the proper looking sample, etc.

I don't plan on adding a Geolosys variant for every single ore someone adds, like ruby, vanilla emerald, rutile, sapphire, tungsten, etc. Some of them just happen to fit into another ore (like Yellorium and Osmium) so I had no valid argument as to why not. For those that don't fit in, that was part of why I worked so hard on the custom entries feature.

If you're concerned about making a sample for your custom entries, I'd suggest something like ContentTweaker and use chisels n bits to create the model (like I did).

That is perfect. I didn't think I could create a sample model with CnB

Yup, just create the model, hold it in your hand and type /c&b.exportmodel into chat :)

I did this because modelling with programs is not my forte, and it feels more minecraft-esque when done with C&B anyways :)

Hehe! And licenses actually allow me to steal your sample.json model, and the texture from AdvRocketry, so it's perfect! 😄 Good job on the custom entry system! :D