According to the article I saw just recently, Jacob and Jack were the most complete, but there was partial content for several other characters as well.
@Valanz if you're still wondering if they're canon, nah, not even one bit. They barely interacted with each other. canonly, those lines were directed to the snake pillar
I used to have quite a bit of a crush on Shimako back when the Marimite anime first came out, in large part thanks to Mamiko Noto's throaty, sexy voice . Those were the days !