The WooCommerce people and the Gutenberg people are the same people. They’re both owned by Automattic.

And to add on to what Sarah shared, while some Automatticians contribute to WordPress, many other work on various products for the company (such as WooCommerce and Jetpack, etc.).

And, not all WordPress contributors are Automatticians. I have many colleagues outside of Automattic who care deeply about WordPress and contribute to it on a regular basis. Cheers!