Not since formally set up since venture capitalist companies, and not since homogenous a group either. An angel investor might become a effective business person, a rich individual, a group of professionals such as doctors or dentists, or a regional investment golf club, or someone else completely different. Your angel may be a rich uncle.
Appear for potential angels. Lacy recommends that you talk to everybody you know, not really whether they desire to invest, but whether they know anybody who may.