Hi everyone,
I’ll just leave this here if anybody needs it sometime.
I made a barebones Gatsby.js starter project using Babylon.js. It is included in Gatsby.js official starter library here: https://www.gatsbyjs.org/starters/creationspirit/gatsby-babylonjs-starter/.
It can be useful if you want to augment some static content site with Babylonjs.
Cheers!