The Growth Core Unit aims to grow the available distribution channels for the Maker protocol by intelligently deploying the human and financial capital given by the DAO, increasing the supply and demand of Dai in the global markets. See their mandate here.
Membership of Growth can be seen in the @Growth-Core-Unit group.
A Core Unit is a building block for organizing work for the DAO. Facilitators define long-term work areas and cover a broad set of focus and responsibilities for the protocol to be secure and successful. Core Unit Mandates set the direction of the work that Facilitators must help carry out. To read more about Core Units, head to MIP39: Core Unit Framework.