Fox has been a beast I agree.
Embiid doesn't belong anywhere near Steph in a debate, he's like 2 tiers below the guy. Embiid hasn't even made the conference finals in the East with a stacked roster year in year out. Steph almost single handedly beat the shit out of the Celtics who swept the soul out of KD and Kyrie, and handled Giannis.
Giannis yes, Jokic maybe (he's just too damn impactful to deny, but he just needs to prove it in the playoffs and this is the year to do it, he has the best squad in the West).
Healthy Kawhi is a myth, but even so the difference between Kawhi and those other names (Steph, Giannis) is that their impact goes well beyond themselves, those players are a walking offensive system that completely warp defenses. Kawhi is not, he can get his buckets on auto but he does not effect his teammates or make them better. For that reason Kawhi is a notch below imo.
If we were strictly talking as 1v1 players, I'd place Kawhi > everyone in the league except maybe KD. But 5v5, it's between Steph, Giannis. LBJ has declined, so he's not there rn either. But he's still someone you don't want to face in the playoffs obviously, as he can pick his spots.