Thanks for the response! I've tried the OEM Samsung cable, the aforementioned Anker cable, and a couple other ones from reputable brands, such as the US$30.99 3-foot StarTech USB 3.0 (5Gbps) Type-C Cable - 100W (5A) Power Delivery Charging.

I compared the charging speeds between plugging a cable directly into the Tesla's USB-C ports against plugging the same cable into the aforementioned WOTOBEUS 95W USB C Car Charger Adapter (ports: PD 65W w/ PPS; PD 30W, and 18W) in the same Tesla Model Y's 12V cigarette lighter, and my smartphone charges significantly faster when plugged into the latter.

Oh, I'm not comparing to wall chargers or using an adapter in another car. I'm purely comparing between plugging a cable directly into the Tesla Model Y's USB-C ports against plugging the same cable into the aforementioned WOTOBEUS 95W USB C Car Charger Adapter (ports: PD 65W w/ PPS; PD 30W, and 18W) in the same Tesla Model Y's 12V cigarette lighter.