I think this is a new abo gender that the author created, depending of the author will depend the levels of the abo system/spectrum.
I believe that this hyper dominant alpha is superior to the dominant alpha, I gonna assume the author's abo spectrum is like this
Hyper dominant --> dominant alpha --> alpha --- recessive alpha --> beta --> recessive omega --> omega --> dominant omega --> hyper dominant omega

What is the difference between a dominant alpha and a hyper dominant alpha?
I've been reading A/B/O for years and never seen hyper-dominant.