The T-rated version of General RT43 is classified as "standard touring" by TireRack, while the H-rated version of RT43 as well as Conti TrueContact are classified as "grand touring".
Here are TR's descriptions of the two categories:
Quote:
Standard Touring All-Season
You want all-season versatility (including light snow traction) along with enhanced handling and treadwear, as well as good noise and ride comfort.
Branded with the M+S symbol and capable of providing year-round traction (even in light snow), these tires are designed to blend a performance tire's appearance with a passenger tire's smooth, quiet ride. Standard Touring tires are typically available in the lower speed ratings and higher aspect ratio sizes and place more emphasis on ride comfort and treadwear than Grand Touring tires.
Grand Touring All-Season
You want all-season versatility (including light snow traction) and responsive handling along with noise and ride comfort.
Branded with the M+S symbol and capable of providing year-round traction (even in light snow), these tires are designed to blend a performance tire's appearance with a passenger tire's smooth, quiet ride. Grand Touring All-Season tires are often used as Original Equipment and place more emphasis on handling and high-speed capabilities than Standard Touring tires.
I doubt these are official industry designations though. More like marketing terms.