Maybe you have already checked these, but in case you haven't:
- https://touying-typ.github.io/ Creating slides in Typst
- https://cetz-package.github.io/ CeTZ is a package that allows for drawing with Typst with an API inspired by TikZ and Processing. It also provides plotting and chart libraries and is used in several other packages to create circuit, fretboard and more diagrams
- maybe try getting your team to use version control? You may this that it's a lost cause, but existing version control schemes (like git) work very great for textual formats, including with LaTeX or Typst