Who is a Singaporean?

I have interviewing to hire another product manager for the little startup I work for.

So far I have interviewed a Malaysian, Indonesian, Indian from Pune and a guy from Beijing China.  Except, they are all Singaporeans.  All 3 been here since early 2000s and call this island home.

They are what I call fob (fresh off boat) Singaporeans.  They have strong foreign accents (yes even the Malaysian), completed their education entirely in their native countries (up to post-university level), have spouses also from the same native land they were born in... In short, culturally have little in common with a typical born & bred Singaporean.

Actually, the Beijing guy came late to the interview, dressed too casually in a very creased (un-ironed) khaki-green long-sleeved shirt unbuttoned at the sleeves.

So who is a Singaporean?  All of them.  Yet the real question should be, who truly loves Singapore?