As of right now, I've got these down:

Caspian is a [url=https://www.enneagraminstitute.com/type-2]2 (Helper)[/url]
Jacob and Atlas are [url=https://www.enneagraminstitute.com/type-3]3 (Achiever)[/url]
Miles is a [url=https://www.enneagraminstitute.com/type-7]7 (Enthusiast)[/url]
Jay is a [url=https://www.enneagraminstitute.com/type-8]8 (Challenger)[/url]

I have two books one the enneagram, so I use them when I'm developing characters a lot, haha