No, Workout Alternate won’t work in this instance. That’s the biggest flaw with that feature, you will most of the time only get other workouts in the same format. If you are interested in workouts training the same energy system, but in a different workout format you have to find it manually.
To use JoPage’s example. He is looking for a workout that’s not float sets. Checking Workout Alternates here just gives 60+ other float set workouts.