All other fuels depend on hydrogen when producing from electricity and have a lower efficiency. Ammonia as a fuel is difficult to handle. Carbohydrates like natural gas or e-fuels depend on carbon capture which is still very expensive/inefficient and they also burn much more dirty emitting particulate matter.

There are also some disadvantages of hydrogen though: Low volumetric density makes transport in anything but pipelines much less efficient compared to carbohydrates. That includes fuel tanks which makes hydrogen for aeroplanes unlikely. Also there's no existing infrastructure compared to existing oil and gas infrastructure.