Returns the names of the account's company types as an array of strings, sorted by name. Inactive company types are included; trashed ones aren't.

["Corporation", "Government", "Non-Profit"]

To see whether a company type is active, get it by name with Company type.

Company types can't be created, edited or deleted through this endpoint. On a company, type holds the name as a string; setting it to a name that doesn't exist yet creates a new company type.