The difference between Powerline II and Powerline+ II is just the exterior material of the cable. For Powerline+ II, the cable is braided with nylon. For Powerline II, the cable is made of Thermoplastic Elastomer (TPE). Both cables are still strengthened with bulletproof fiber.
Anker Powerline+ II USB-C to Lightning Cable – Box Front
The cables are available in three colors (Gold, Silver, Black) and each of the colors are available in 3 lengths (0.5m, 2m or 3m). You can get all 9 variants from Amazon.