Here is a great blood type analysis to explain different genetic factors that can be known by your blood type. This is why the elite are obsessed with certain bloodlines. Remember these traits show up more in -RH blood types.
God is used to describe the spiritual leaders that created humanity.
O RH negative- Pure blue blood of the Gods, very rare.
O RH positive- Mixed, God and humans. The most common blood of modern humans. This is most likely the first humans created by the God/human mix.
A RH negative- Mixed, God and human type 1. Very rare.
A RH positive- Human type 1. Very common.
B RH negative- Mixed, God and human type 2. Very rare.
B RH positive- Human type 2. Very common.
AB RH negative- Mixed, God, human types 1 and 2. Very rare.
AB RH positive- Mixed, Human types 1 and 2. Very rare.