Is there a way to name the “Other” workout?

Name your workout

1. On your Apple Watch, open the Workout app.
2. Tap Other.
3. Complete your workout.
4. When you're done, swipe right, then tap End.
5. Tap Name Workout.
6. Tap the type of workout, then tap Save.

You can't name a workout any more in watchos6,what you do is open the workout app on the watch and scroll down to the bottom and tap on "add workout" and pick the nearest type of workout to yours,in the list of 78 workout types.