The phrase "all three categories of" is correct and usable in written English.
You can use it when referring to a specific set of three distinct groups or classifications within a particular context.
Example: "The study examined all three categories of consumer behavior: purchasing habits, brand loyalty, and product preferences."
Alternatives: "all three types of" or "all three groups of".
All upper-tier teams face all three categories of decisions.
All three categories of pack cementation coatings show degradation of the corrosion scales and internal attack.
But when it comes to travel-related products, many fit all three categories of wastefulness.
The finite element method is applicable for the solution of all three categories of problems.
Examples of how the proposed coding scheme works are given from all three categories of experiments.
No, all three categories of double-counting can apply, depending on the two declared programs of study.
The relationship between field-observed and predicted mean Ellenberg values was significant for all three categories of prediction models.
She lost to Sadiq Khan, then MP for Tooting, who proposed a more radical agenda and comfortably won the selection in all three categories of the party's electoral college.
In all three categories of medical communication, the reporting of criteria that defined the study disease tended to be complete; reporting of criteria relating to trial precision, patient safety, legal and ethical concerns, and administrative considerations, was not complete.
Informal analysis showed that all three categories of infants gained weight during hospitalization, different PEEP pressures and different lengths of hospitalization were observed among the groups, and infant characteristics (e.g., APGAR, gestational ages) were similar across groups.
Mr Mallaby writes: "Rather than trying to rebuild the Bank's relationship with all three categories of stakeholder shareholders, NGOs and borrowers—Wolfensohn should have been more sensitive to the trade-offs between them.
