There are lots of angel groups – it’s often hit or miss. Here are the ones that come recommended from people we trust:
Band of Angels: https://www.bandangels.com/apply-to-present/
TiE Angels: https://sv.tie.org/initiative/tie-angels
Harvard Business School Alumni Angels: www.hbsalumniangels.com
Sand Hill Angels: http://www.sandhillangels.com/
Georgetown Angels: www.georgetown-angels.com/apply