The phrase "are categorized in a" is correct and usable in written English.
It can be used when describing how items or concepts are classified or grouped within a specific category or system.
Example: "The various species of plants are categorized in a comprehensive database for easy reference."
Alternatives: "are classified into a" or "are grouped in a".
According to the North Korean caste system, called songbun, people born in Japan or South Korea, the nation's archenemies, are categorized in a lower class Kim Jong-un's heritage on his mother's side would be considered "impure".
In, Margaret Atwood envisions a future theocratic American country in which women are categorized in a hierarchy as wives, servants, breeders, and so on.
Scotti et al. (2012) Metal transfer modes are categorized in a flow chart: natural transfer, controlled, and interchangeable transfer.
Contributions are categorized in a variety of ways (under particular competitors or "workspaces", for example) and all activity on the site can be tracked from a Dashboard page.
Here, mesostructured crystals are categorized in a new family of crystalline states as intermediate between faceted single crystals and polycrystals that are random arrangements of small grains.
Daily closing stock prices for these corporations are extracted from WRDS database [19], and stocks are categorized in a market sector according to Yahoo Finance criteria [20].
Time was also a limitation factor in constructing the score, because exposure time was categorized in a subjective way, trying to categorize time as homogeneously as possible.
Level of service is categorized in A to F, which A indicates the best conditions and F indicates the worst condition of traffic.
The main difficulties stem from the fact that it is quite difficult to define what emotion means and how it can be categorized in a precise way [3].
Distal radial fractures in children can be categorized in a variety of ways such as buckle (or torus) fractures, greenstick fractures, complete fractures, and fractures involving the physis (classified according to the Salter–Harris classification [13]).
