>Sound
Already a game mechanic. Very broad category since all pokemon emit sound in some way. Pokemon can't "be" sound
>Space
A rock from space is still just a rock, there's nothing inherently special about space, hence why most pokemon from space are psychic and now fairy.
>Light
RPGs use light type as religon or healing based, a healing type could exist but "light" in the physical sense falls into the same category as sound
>Cyber
Effectively electric
The common arguments that I see in these threads: Ice is just Water (cold is the focus, like fire is heat), Ground is just rocks (ground covers pokemon that live in ground), Steel is just rocks (steel covers metal or artificial pokemon)
