sp/sx vs sp/so

hello, i’m positive that i’m an sp 3, but i was hoping someone could give me any insight on sp/sx and sp/so specifically when it comes to type 3s, because despite my research i’m not really sure where i’d place myself. i feel like it might be possible that i identify with sp/so, but i’m also borderline so my disorder might be clouding my judgment when it comes to this and making me consider sp/sx (i can be very, very obsessive), but i can’t entirely tell. anything is appreciated thank you