1992-93 the fork was refered to as Delta V suspension fork. In 94 it became the Headshok™.
Gravel, down country, trail, all mountain, etc.. are like most biking riding style terms are made up by some overpaid marketing monkey. If they throw enough poop out there something is bound to stick and people will flock to it. Gravel bike makes it sound tough, vs slight sturdier road bike with wider tires, or drop bar mountain bike. Most people stil call drop bars curly bars around here, and the bikes they are attached to, ten speeds!