I know a few agencies using drupal but those guys are closer to engineers who love building their own stuff. I don’t recommend food for anyone looking for an oit of the box solution.
Currently were attached to webflow cms which has been hit or miss but I’m probably going to try WordPress once we get a few more clients on that will give me room.
I have also heard good things about magnolia.
I refuse to use Adobe but I might think about it if our agency reaches a cool six figures.