In reply to John.

We're currently working on adding more options to that settings screen, to allow you to search, filter, and bulk activate modules like you in the old interface. You can follow our progress here.

Until we ship the next iteration of the Jetpack dashboard, you can click on the Search icon and you'll immediately see a list of all the modules.
Another alternative would be to go to the old Settings URL, /wp-admin/admin.php?page=jetpack_modules, that is still available in your dashboard.