[Quoth]

After a few playings Vinyl has less than 15 kHz. Recordings from 1950s onwards were made on tape which hardly went more than 15 kHz. Earlier they used direct cutting of a master and that would not have reached 15 kHz. Only Condenser microphones (maybe ribbon) would do above about 10 kHz to 12 kHz.
The S/N, distortion and dynamic range is far worse than CD.
CD-4 (Discrete Quad) records were a failure.
FM Radio doesn't use 19 kHz, as that is the pilot tone for the DSBSC subcarrier at 38 kHz. The max audio frequency on FM is about 12kHz to 16 kHz.
The 44.1 KHz sampling chosen to suit bit rate of the new digital mastering in 1980s and all Vinyl & CD uses the same recordings. They don't live record twice. The sample rate is higher than needed to make the anti-aliasing filter simpler. The 48 kHz and later 96KHz wasn't chosen to give any more audio bandwidth but so cheaper and simpler anti-aliasing filters can be used.