I also think Inter will take first place. As for the second place I think it could be Benfica, but Salzburg also have the possibility to compete for that. The fact that Real Sociedad will not be able to compete in this group is a fact. That leaves three clubs that will fight for the first two places.
This can still change even if you say it as a fact, because basically all the teams in one group will compete for first place. But if the first place option is no longer available, it will push three more teams to aim for second place by giving everything they have to get there. I think the competition in Group D will also be quite fierce apart from the competition in Group F which will also look quite tense because there are also many teams that are just as good.
I think Real Sociedad is also not a weak team and not an easy team to beat too. Because ya, even though Real Sociedad doesn't have a good chance in this Champions League, but that doesn't mean Real Sociedad doesn't have the ability to win in one of the matches later. Besides, if I think about Salzburg, at least their league in the Austrian league also doesn't have any competitive rivalry. So of course, with these factors also at least make Salzburg have a very good dominance of the local league. But in my view, it seems Salzburg quality is not much different from Real Sociedad. Therefore, for third place it seems like a contested between Real Sociedad and Salzburg, and for positions one and two of course it will be contested by Inter and Benfica.