Why isn't snowshoeing on the workout list?

FYI, we’re all merely fellow users here w/o any “inside knowledge” of how Apple chooses the itemized activities.

That said, snowshoing certainly might seem an activity worthy of inclusion in future updates.

Apple actively solicits exactly this kind of feedback for consideration in future product development via this mechanism:

Feedback - Watch - Apple

The Apple product development teams, as well as all other Apple employees, are embargoed from these public, Google archived, and strictly user-supported communities. Unless you choose a specific feedback item from the Apple feedback page, there is no means to communicate with the product teams, other than in the next paragraph.

If the item you wish to provide feedback is not available, you may need to provide feedback to the specific operating system or device (e.g. iPhone) item and hope it is directed correctly within Apple.

You’re welcome.

Having waited until about a year ago make my first “snowshoeing trip” in Washington’s Cascade Range …

… I can attest to the unique level of effort involved. (I loved it)