Sarah,
Thank you for an update!

It’s exciting to see the WordPress editor constantly evolving and providing more layout options for website creators.
YAY (>‿◠)✌
The decision to introduce the grid layout type as a new variation for the Group block, instead of creating a new block,

is a wise move.

It allows for more real-world use in the first iteration and minimizes confusion for users who are already familiar with the Group block.

I am looking forward to experimenting with this new feature and seeing how it can enhance the design and functionality of my website. Thank you for sharing this valuable information with the WordPress community.