The thing is mbappé has already pretty much reach that level and have the potential to go far beyond (you should hear Henry talking about him, he said it himself). As far as ''finesse'' goes Anelka and Zidane had more of it than Henry at the time and Griezmann, Benzema also have more nowadays. Finesse was not specially one of Henry's abilities. Henry was one of the best strikers to ever play the game but even his teammate Bergkamp at arsenal had more ''finesse'' than him. Once mbappé loses his tendency to carry the ball and to imitate Neymar doing ineficient dribbling skills, his finesse we'll be even more apparent. As far as I'm concern mbappé is pretty much Henry but with way more ''finesse''. It will show more as he matures..