Nice work!
I do think goals/game is a flawed stat for measuring goalscoring ratio though.
I think a goalratio based on goals per minute on the pitch, you will give you a more real picture of who is the best goalscorer and better statistics (Haaland for instance started just 2 of his 16 apps for Bryne as a 15/16 year old and only half of his 50 apps for Molde):
- Haaland has a goalratio of 89 minutes/goal including all his senior performances for Norway and Bryne, Molde, Salzburg and Dortmund. After he went to Salzburg he has the insane goalratio of a goal every 72 minutes for Norway, Salzburg and Dortmund (76 goals in 5488 minutes) and even more insame if you include his Norway U20 performances in that same period (11 goals in 404 minutes - 37 minutes/goal). CL 18 goals in 990 minutes - 55 minutes/goal
- Ronaldo (R9) had a goalratio of 106 minutes/goal including all his senior performances for Brazil, Cruzeiro, PSV, Barca and the first season for Inter up till after the WC 98. If you take away his early Cruzeiro career (2 goals in 920 minutes) and we count from he went to Europe he had a goalratio of 101 minutes/goal. Ronaldo played his first CL match when he was 22. Ronaldo arguably had the toughest working conditions and his teams didn't score as much as Mbappe and Haalands teams has.
- Mbappe has a goalratio of 108 minutes/goal for France, Monaco and PSG. He has played for a stacked PSG in Ligue 1 which is good for statspadding, but also contributes with a lot more assists than the other two.
Owen was miles behind with around 150 minutes/goal also including his prime years for Liverpool. He never scored 20+ PL-goals in a season in his career.
R9 is my favourite player of all time, and watching him play for Barca and pre-injury for Inter is the sickest stuff I have seen on a football pitch. It wasn't just the goalscoring, it was the nutmegs, the tricks, the arrogance and the alienlike explosiveness, strenght, pace and balance. He was something else, a one man army.
...but when it comes to goalscoring, ang goalscoring alone: Haaland is the best young goalscorer in moderns football to this date. And he has that freakish explosiveness/strenght/pace combo as well. So fascinating to watch.