The phrase "distinctive groups" is correct and usable in written English.
It can be used to refer to groups that have unique characteristics or features that set them apart from others.
Example: "The study focused on the behaviors and preferences of distinctive groups within the community."
Alternatives: "unique categories" or "identifiable clusters".
The Feds The hotel has two distinctive groups of people in it, Saudis and the Feds.
The Constitution, he said, forbids only the exclusion of distinctive groups like blacks and women.
Are there distinctive groups of customers who are not well served by current offerings?
Hungering for America tells the stories of three distinctive groups and their unique culinary dramas.
He charts the splintering of distinctive groups across the continent, traditionally lumped together as "gypsies" – a term first used because they were thought to come from Egypt.
His trenchant images meticulously parse discussions among residents of many backgrounds and speakers of many languages — for the most part, members of distinctive groups meeting among themselves.
The cluster analysis from morpho-physiological parameters clustered genotypes in three distinctive groups as per the level of drought stress tolerance.
Principal component analysis was applied to identify distinctive groups of keyword combinations that were interpreted in terms of specific service value attributes.
Three distinctive groups of the equations were studied: a single nonlinear equation, a simple set of nonlinear equations and a complex set of nonlinear equations.
It illustrates, step by step, how he stalked and attacked painting — zapped its conventions, messed up its history, spoiled its market value — through distinctive groups of experimental works produced over a decade.
The White-collared Seedeater contains two distinctive groups of subspecies, which do not meet geographically, and which have been considered to be separate species (e.g., Ridgway 1901; see also Binford 1989); see Geographic Variation.
