Ordinary black tea contains caffeine too. 

I love good strong coffee and probably drink too much.  But to reduce some caffeine intake I would recommend Rooibos / Redbush tea which I have drunk instead of black tea for years, and have converted several friends to it.  I like it because you can drink it with milk like ordinary tea and I find herbal teas don't really 'do it' for me.

https://www.organicfacts.net/health-benefits/beverage/health-benefits-of-red-rooibos-tea.html