Yup, medium-chain triglycerides are the ones that generally trigger ketosis, though Lauric Acid doesnt really act like an MCT in the body, and it's the most abundant.
The other oils in most MCT you can buy at the store trigger intestinal... issues... if you have too much, which is why I stick to just Caprylic Acid.
Here a good article explaining each of the fats and their properties:
https://blog.bulletproof.com/what-is-mct-oil-vs-coconut-oil/
RE: Ketogenic Breakfast for the Nomadic Lifestyle