Ah, my apologies for the misunderstanding. If you're looking for a grammatically accurate word to describe a group of individuals who lack authenticity or genuineness, one term that comes to mind is "charlatans."

The word "charlatans" refers to people who falsely claim knowledge or skills with the intention of deceiving others. It carries the connotation of being insincere and lacking in genuine qualities.

Other possible options could include "impostors," "frauds," or even "quacks" depending on the specific context.

I hope this provides you with a more fitting answer! If you have any further questions or need assistance with anything else, feel free to ask!