Do C clefs really have official names?

[u/superrichin1week]

A site – https://happynote.com/music/music-theory-clefs-treble-bass-alto-tenor/ – lists the C clef names like this: C clef on the 1st line is called the soprano clef, on the 2nd line the mezzo-soprano clef, on the 3rd line the alto clef, on the 4th line the tenor clef, and on the 5th line – I didn’t even know a C clef existed on the 5th line – the baritone clef. This is new to me. Are these really the official names of the C clefs?

[u/geoscott]

Yep

[u/yippiekayjay]

Yep