What strains do dispensaries most want?

What are some strains that most California dispensaries would be interested in? I need to look into strains that are good for new growers, but also those that dispensaries would want in the first place.

Any kind of OG

I know that one of the places that I go to LOVE Granddaddy Purple.. They usually run out within a couple of days of getting it in.

Anything OG