I like most teas, be it iced, hot, matcha-style, latte-style, brick-style.
The only ones I haven't liked quite as much were some of the floral tisanes, which taste... odd. My favorite black teas include the timeless Earl Grey (like the bergamot astringency), Darjeeling, Ceylon. Oolong is a class in itself and good altogether. I prefer steamed green teas over pan-seared ones (more of a vegetable-like flavor), like sencha. White tea is good, as well, though the flavor is much more subtle (it's easy to mess up some greens and whites while brewing, since it can taste really bitter if done incorrectly). If you haven't tried Pu-erh tea yet, it is interesting, too.