Not often considered but a large engine single aeroplane can have a situation similar to Vmca at low speed and high thrust. I understand that some OTE exercises in the military have considered this.
I hadn't thought of it in the Vmcg context, but this is very applicable for many prop singles, particularly taildraggers - e.g. Harvard, Mustang, Grummans, etc. Opening the throttle aggressively can result in a ride through the bush long before liftoff speed. And adverse crosswind can be a catalyst!
