Organizations enjoy all of the features mentioned in our plan features document.
The feature set would match up with the names we provide here. Org Pro is equivalent to Pro, and Org Pro+ is equivilent to Pro+.
Below are the features you get by creating an organization, instead of using our other plans.
Member management features
Control member access to profiles with fine grained permissions
Base level permissions for all members
You can restrict access from all members to access profiles, while adding direct access on a profile for individual access
Control whether or not members can create new profiles
Add multiple owners to your organization
Add outside collaborators to your profiles