Tbf Cristiano Ronaldo is exactly the same. His trademark is drifting through games and then popping up at exactly the right moment to get a goal when it matters, obviously Ronaldo is on a whole other level but I think Richy has that same killer instinct, and is still playing nowhere close to his full potential. After all the one thing that separates good players from great ones at this level, is mentality - there are amateur players with more technical ability than most PL footballers for example but will never make it at any level because mentally they aren't there.
He isn't the flashiest or most spectacular player but as mentioned before he's a complete striker, he's two footed, he's a good header of the ball, he'll chase everything, can finish, beat a man, great at playing cut backs, really can't ask for much more than that. Now if he could do all of that to an elite standard he'd be one of the best players in the world, that's what makes him such a massive prospect.