Hi! I just looked and I do have one last Swablu spitback in a dream ball! However, it is male, but since males can pass down the ball in Sun and Moon, I assume this should be ok?
I also have Slowpoke and Munna females in dream balls. I do also have Metagross and Porygon in dream balls, but since it cannot be passed down, I would have to clone them if you want a copy.
For spitbacks and such, you don't need to give me anything in return, I can just send over what you need. I wouldn't mind the Exploud and Mawile though if isn't too much trouble!