Am pretty sure with every type of riding you see it is still TGS for sure . Just with different flow styles.
We all have different speeds for riding, some like street and some like natural.
We are all riders right ?
We all tap to something in our own way?
We all gap to something in our own way?
We all sidehop onto or over something our own way?
This whole people categorising trials into different groups like TGS, Street and Natural. it just seems to cause conflicts between other riders slagging there styles off and what they ride.