Assuming you're not just baiting....
The eastern San Fernando valley is the home to a large Armenian immigrant population. The vast majority are fine, upstanding citizens. For the few who have chosen a life of crime, fraud... particularly involving government agencies... has been a favorite choice. So, finding a list of fraud suspects whose names all end in 'yan' is an event that occurs with greater frequency than the percentage of similar names occurs in the population at large. For those who live in the area, it's a cliche, not unlike southeast asians owning donut shops.
Before you ask, 'no, it does not indicate anything about the character of Armenian immigrants as a whole.' What it does indicate is that among the small percentage of immigrant populations who have chosen to see America as presenting an opportunity for committing crimes, various populations have chosen different specialties. Frequently the choice of a criminal career involves the one you become aware of, and the one you can find experienced or knowledgable co-conspirators to assist you with. We have large numbers of drug dealers, for example, but they tend to not be Swedes.
A few years back, retail cocaine dealers in the entertainment industry tended to be uniformly anglo junior executives. I found that similarly humorous.
Just trying to see where you were coming from. Some of my relatives from Fresno [sons / daughters of immigrants] have made some rather nasty comments concerning the most recent batch of Armenian immigrants. Short memories I suppose.
For what it is worth, if I could pick my ancestry by association with any particular category of criminal enterprise, I suppose the one that specialized in scamming governments is the one I would choose. :-)