Here’s one of the cheapest cars with VTD (Ground Effects - Carbon/Metallic Black) to show the difference. This car doesn’t have TD2 on its RPO’s.
https://www.gmbuildcounts.com/search...FB1RX5M0132423
The 1LE’s have TD2 because of the hood wrap in vinyl. I can’t tell you the exact reason for the TD2 RPO code but it’s definitely vinyl install related. Last I remember a third party company supplied the vinyl to GM.