Na, she's pakka for Rudra, and personally I think they both fit nicely together, so far. Couples don't have to be each other's complete opposites, after all. Though, there are contrasts between them if we want to find some like Soumya seeming to be more grounded and mature whereas Rudra still has a certain immaturity and childishness to him. But I think a lot of the times, people bond over similarities which could be (for these two) their urges to want to make other's smile, their general sweetness and so on.
As for Omkara, I don't think he needs a bubbly kind of girl. Maybe someone who has a cunning streak to her, hardened by life. Let's see. But whoever it is, I'm sure Om will meet her first just like Shivaay met Annika and Rudra met Soumya before the other brothers did 😆