Sport-touring are the workhorses of the recumbent trike world. You can kit out sport-touring trikes for speed, upgrading tires and drivetrain parts. Or you can leave them in stock form a fitness bike that will grow with your abilities. You can load them for touring or commuting, or leave them light for zippy day rides.
They usually come with a 26″ rear wheel, giving higher gearing and a smoother ride at speed. Or they can often be equipped with a smaller 20″ rear wheel to make it lighter, more compact and maneuverable.
Many of these models have a folding option for extra portability. Some offer suspension for additional comfort in sub-optimal riding conditions.
These trikes sit higher than fast trikes, so access is easy, but they sit lower than casual trikes, giving more stability when whipping through a turn at the bottom of a big hill. The frames are stiff, so you’ll be efficient as you hammer up the next climb.
If you aren’t sure what you want, this is the category to look at.