The phrase "a growing subset" is correct and usable in written English.
It can be used when referring to an increasing portion or group within a larger category or population.
Example: "In recent years, there has been a growing subset of individuals who prefer remote work over traditional office settings."
Alternatives: "an expanding group" or "a rising segment".
Archbishop Flynn was the original "fixer" bishop, but now he is part of a growing subset.
College deans, Dr. Mogel said, have recently adopted a nickname for a growing subset of incoming freshmen: teacups.
At the same time, a growing subset of internships are available only to students who cannot afford to work for free.
Ranch regulars claim to have invented this extreme form of high-speed, high-performance parachuting, now popular with a growing subset of thrill-seeking adrenaline junkies bored with simply plummeting to earth as plain old sky divers.
In "Young Writers Dazzle Publisher Momm and Dad)," on Sunday's front page, I explored a growing subset of self-published writers: children and teenagers.
Retaliation complaints are a growing subset of workplace discrimination cases, because it is often easier for employees to demonstrate that they were retaliated against than that they were victims of discrimination in the first place.
High-risk human papillomaviruses (HR-HPV) are the cause of most ano-genital cancers and a fast growing subset of oropharyngeal cancer.
Is this a 'non-deductive method'?[13] There is a small, but growing, subset of mathematical methods which are essentially probabilistic in nature.
Indeed, industry statistics suggest that a small but growing subset of the jewelry-buying public prefers to buy their jewelry sight unseen.
The woman was talking on her iPhone, and never saw coming her induction into a large and growing subset of crime victims.
However, so far little is known about the physical activity behavior of an important and growing subset of the population: patients after total hip arthroplasty (THA).
