Name: PLU [acronym], People Like Us [noun]
We have one word for this: vague. Or relative.
First, one needs to answer who is "us"? What is "us" made up of? Can we really have people who are like us in all ways? Or if we mean just one aspect of our being, then we have many PLU groups. A single mother working as an artist who is Protestant Christian can have three PLU circles: single mothers like her, artists like her, and Protestant Christians like her. And we all know that humans can be more complicated than that. That single mother/artist/Protestant is also Danish American, a breast cancer survivor, a democrat and an animal rights activist.
Who is "us" again?