Late Mozart was also an independent-minded tortured soul . . . . . and may have served as a role model to Beethoven . . . . .
d minor,
But you are not discriminating between what we know now and what was believed about Mozart, even when he was still alive. He was, indeed, an independent-minded, tortured soul. But no one knew or believed that, not until the relatively late 20th century were many of the myths surrounding Mozart dispelled. Ones like "He was Divinely inspired, all he did was hold the pen and it was like automatic writing" and "he was a drunken, whoring playboy who was so gifted that it didn't stop him from writing beautiful music anyway", and lots of others too. And don't forget, he was a lightweight, rococo tunesmith too.
Beethoven was the archetype of the tortured artist, each note squeezed from the pen only after hours or days of frenzied thought, crossing out, tearing up &c &c &c. In its own way, this picture is just as wrong as Mozart's. But it was perfect for the Romantic sensibility all around him. Add Schubert to the mix, and this was indeed the Age of Tortured Artists...
