So you are saying that you will apply for PR under OINP. Include your wife in your application.
I do not think there is a special visa or permit for dependent of applicants with their PR being review and processed.
It's better if you post at a different section. As you can see in Naturgrl's reply, she is assuming that you already have landed as PR (with COPR) and asking about spousal sponsorship. This is what this section is for.