I like general teas like earl grey and Lipton, but I'm not sure if those add any sweetener and sugar. I never feel like I nee scv to add any sugar to my tea so I suppose that theres a data point.
No sugar. It took me quite some time to stop adding sugar to my beverages but I got there in the end. I started by leaving the sugar out of juices and from there on moved to tea and coffee. If I want my tea to be on the sweeter side now I just add a couple of teaspoons of honey.