The phrase "of a different category" is correct and can be used in written English.
For example, "This book belongs to a different category of literature than the others."
"They are hostages, but of a different category," he said.
"He is an exceptional player, of a different category, thinking in a way that at times isn't recognised," Bielsa said.
"It's sort of a different category than all the sudden taking a Vicodin as a party drug – it has a different sort of history".
Therefore, any measure which influences route choice by directing or diverting traffic to roads of a different category, also has an impact on road safety.
Most of the stimuli (nontargets) were members of one category (animals) and infrequent targets were members of a different category (foods).
Steve Jurveston — an even-better known venture capitalist who has been a VC far longer and backed a greater number of winners, including Tesla, SpaceX and Planet — is in somewhat of a different category, say LPs.
He admitted that what he had done belonged, perhaps, to a different category of invention.
Ross, through the decades, has worked almost exclusively in this sort of format, with each new series of portraits offering a different category of social examination.
Each section of the results treats a different category of interaction defined in terms of what parties are affected.
"The special status of Mr Taylor as a head of state puts him in a different category of offenders for the purpose of sentencing".
With the exception of Bale, who is a different category of footballer from the rest, not one Spurs player seemed to develop under his leadership.
