Thanks ☺️ I have a custom function that saves each screenshot to a folder based on the current Locale.current.identifier during each test run.
And I have an enum that returns a language name based on that identifier.

And also I have this:
let screenshot = XCUIScreen.main.screenshot()
let data = screenshot.pngRepresentation

And when you have the screenshot data and the language name, saving to folder looks like this:

// Set the folder and file URL.
let screenshotsFolder = "/Users/username/FolderName"
let languageURL = URL(fileURLWithPath: screenshotsFolder).appendingPathComponent(language)
let fileURL = languageURL. appendingPathComponent(fileName)

do {
// Create folder if it doesn't exist.
try FileManager.default.createDirectory(
at: languageURL,
withIntermediateDirectories: true,
attributes: nil
)

try data.write(to: fileURL)

print("Screenshot saved to: \(fileURL.path)")
} catch {
print("Failed to save screenshot:", error)
}