I'm Oneg, what "should" my antibody screen show?

Blood type. There is no such thing as "should" in clinical laboratory medicine. "It is what it is." If you forward-type as O-, we expect you have antibodies against red cells bearing A-antigen and against red cells bearing B-antigen. If you're sensitized to D (the main Rh factor), you have anti-D. However, all these are subject to other factors. Your physician &/or the lab pathologist can explain anomalies.