Non traditional ABO vs Traditional

I'm unsure what to tag my fic with. One of the characters is an alien, and on his planet the Alpha and Omega spots are swapped. Their alphas are how "traditional" Earth Omegas are, and vice versa.

Technically, its still alpha x omega, but appears very heavily as alpha x alpha before the big reveal. Thoughts?

Should I tag non traditional ABO dynamics, or even alpha x alpha until the plot twist? Thanks in Advance!