Green tea, peppermint, and lipton.
Hibiscus. loose leaf. It's sour as hell and so good. I always cold brew. Somebody here put me on loose leaf a few months back and it changed the game. Bags are terrible. Always get loose leaf. I have a few samples of different stuff I ordered from The Tea Spot but I'm waiting until it's not so hot to use them. I always take my pitcher with me and the tea gets warm way too fast in the summer. I may need a big ass thermal to keep it cool like I do with my water. Carbonizing your tea with one of those machines is next level too.
This
I like to treat my hibiscus like sorrel sometimes too and grate some ginger in with some cinnamon/allspice
Loose leaf is the way to go though.
Besides The Tea Spot I use Heavenly Tea Leaves and Harney & Sons
I use something like this to keep brewing simple:
Amazon.com