List the people and organizations in your 1st degree of separation. These are people that will be as excited as you are and willing to spread the word about your project. These should be the people contacted before you even launch and should always be updated and informed with updates and changes.
The 2nd degree list should be all who can be reached immediately once your project has been launched. This includes people and organizations you know personally as well as people and organizations you know through your 1st degree.
These people and organizations are ones you may not know personally, but who you are willing and able to reach out to and explain your project. They most likely are in the same industry or will want to align with a project like yours.