Currently, there's a new Accordion and related sub-blocks in experimental phase: WordPress/gutenberg#64119

It's possible that these land in WP 6.9. We need a tutorial that walks developers through designing these for their own themes.

For example, here's one style variation that I've built for my theme:

It'd be great to walk theme authors through all four of the new blocks, limitations with design, and how to style them using best practices.