I doubt there is anyone on this site that wasn't aware that Stealth was the first "flying" coaster, but you have to agree that the B&M flyers are better, surely?
As for the drop coasters being a inspired by Gravity Max, well, I don't know about that but surely a vertical or near vertical drop is an obvious element and the holding brake at the top is just the natural progression of that idea. There may have been inspiration taken but... I dunno