The Hijrah Chronology reports its name as "Hijrah-umalqura" from the DateTimeFormatter.
Since this is the default and was been identified as the primary Hijrah Calendar it should return the name "Hijrah".

The current CLDR data (21.0.1) doesn't have the name for islamic-umalqura. The proposal is to hard code the name in the CLDR converter tool for English and Arabic (only).

See tests/java/time/tck/java/time/TCKChronology.data_of_calendarDisplayNames

See Threeten issue #309 https://github.com/ThreeTen/threeten/issues/309