Forum:Scrap Orthros nomi

I just read about Nomi monsters and I can't figure out how to spot the difference with a semi nomi.

Scrap Orthros says it can ONLY be special summoned by controlling another Scrap monster. It says ONLY so does that make it Nomi? Or can he be special summoned by Scrap Chimera?

It's stupid cause on the Semi-Nomi wikia page, it says Black Luster Soldier - Envoy of the Beginning is Semi-Nomi, although it states on it's text that he can ONLY be special summoned by removing from play a light and a dark monster from the graveyard.

Is this a translation issue or is there something obvious I'm missing?