Maybe we see 9s differently. No disrespect mate but if you are suggesting Stewart isnt a 9, because he played wide 4 years ago then I may never sway you. Phillips was a full back...
Ollie Watkins is an out and out 9 for me. Absolute elite level. As is Kane. They are real throw back 9s. I go back to 9s like Hately, as an example of what folk often refer to. He was not restricted to the box. He would come in to receive and set up play. Even Lineker did it, and at Barca was renowned for his little give and go in deep. 9s arent lads who just play in the box, never have been. If we are saying Kane isnt a 9 I am probably in the wrong game.
My definition of a 9 is somebody who is the highest point on the pitch in transition. Somebody who is the outball into a channel or a wall pass. Then they are lads who have that desire to beat their marker to the ball, whether on the deck or in the air. They need instinct to see the play developing and hit positions that wingers have to hit. Wyke was a prime example in his 30 goal season. Johnson did the oldest coaching trick in the book and had him run across his man. Once McGeady trusted that run he just hit the front post area (POMO) and the rest is history.
As an aside, the easiest position on the pitch to coach is 9, in my opinion. There is nothing complex and very few instructions. Only good coaches understand how to coach other players to work with a 9. Having wingers and midfielders move the ball quick enough and pull opposition players about is tough. Wingers tend to be hard to coach in my opinion, head down merchants and ball greedy buggers. I reckon some coaches have taken the easy route of not wanting to teach wingers how to be massively effective - path of least resistance.
Anyway, put me in charge of transfers and I will give you 2 proper 9s, no bother