Cuber

From Speedsolving.com Wiki

A cuber is anyone who enjoys playing with the Rubik's cube, or more generally any twisty puzzle. Nowadays a majority of cubers are also speedcubers, meaning they care about solving puzzles as fast as possible, but there are still very many people who are interested in cube theory, collecting, programming cube simulators, or building cube modifications.

A short list of notable cubers who are not speedcubers is: