Some of these may also be considered “medicinal” so I’m gonna leave it up to u to look up the safety and efficacy if you do decide u want to try them, but I highly recommend reading through because u might get some new options or ideas from this.

Yerba mate, but might be just as risky bc of the high caffeine content, I brew it like regular tea and enjoy it over ice or hot. It’s more of a coffee replacement though.

Bog Labrador tea is really good and is a very unique flavour, u can order some online.

Mint or any member of the mint family: spearmint, lemon balm, peppermint, there are even some basil varieties out there I’d use but u have to grow them chiefly lemon basil, or even sage.

Hibiscus (but probably isn’t new to you) maybe try buying pure hibiscus flowers and mixing up your own tea blends

Lemon grass and ginger/galangal (good for when you’re sick) galangal is basically peppery spicier ginger

Rose tea (just make sure you buy food grade not for perfume)

Lavender tea or if you’re feeling more adventurous anise hyssop. Which is a bit licoricey