do they bottle with co2 or condition?

Do the commercial breweries bottle after they carb the beer or do they carb in the bottle?

Depends - both methods are used. SNPA is a notable example of bottle conditioning.

Yes....

Several breweries bottle condition, and several force carb.

And several yeast carb and filter.

If it has sediment in the bottom, them more than likely it's been bottle conditioned.

This is a pretty good list of beers with harvestable yeasts, though it is waay incomplete and hasn't been updated. It's still a good source. http://www.nada.kth.se/~alun/Beer/Bottle-Yeasts//

There's a current thread on here where some folks are harvesting the yeast and updating the list.