Newcastle are first but after all the points difference are only 3 between all the four teams so every round might switch the ranking.
Next game will be between Dortmund and Newcastle while PSG will face Ac Milan.
Newcastle and PSG are favourite according to bookies. I find both matches as hard and interesting. Dortmund and Ac Milan are good teams and they could win in their games. I think Newcastle could win or get a draw while Milan and PSG will get a draw.
The Group F standings board is like a ladder and the opportunity to qualify for the next stage is not much different from their position in the standings. On the other hand, the opportunity for the four clubs to qualify from the group phase and progressed to the top 16 is still the same because they do not have a big difference in points. In accordance with the composition of the clubs in it, group F is like Hell and difficult to predict. It is very likely that the PSG vs Milan and Dortmund vs Newcastle matches on matchday three will end as you say.
However, if you look at it from another perspective, PSG and Newcastle will have an advantage because they are playing at home, so their chances of securing full points are slightly greater than Milan and Dortmund. I think after this match the favorite club will emerge in Group F, for now it is still unclear.