Could Austria-Hungary's faster pre-dreadnoughts be called fast Royal Sovereign-type battleships?
Short answerNo. They are Royal Sovereign-style pre-dreadnoughts adapted to the Adriatic, rather than a separate fast category.
NotesAustria-Hungary's faster pre-dreadnoughts do not require a separate 'fast Royal Sovereign' category in this classification. They remain Royal Sovereign-style battleships adapted to the Adriatic. Differences in speed and local requirements do not make an additional label useful here.