You may want to look into Dancer and Bard as well. Melee classes all feel fairly buttonsy but, more importantly, will require more movement than a ranged class will. Both Dancer and Bard have to hit their procc'ed skills when they come up but you're otherwise just hitting buttons at a regularly timed pace. Plus, while both Dancer and Bard allow for very free movement, very few fights really require you to move all that much (unlike melee which are semi-required to move to hit positionals even if there is nothing to dodge).

Unfortunately, you won't be able to play Dancer until level 60 but Bard is available at the start in the form of Archer.