As a matter of fact, G C was one of the songs he regarded as not very good - it doesn't appear in his notebooks and wasn't included on his own recordings
This is the point I've been trying to hammer home - because a singer knows al sorts of songs, it doesn't mean he/she rates them all the same - why should they, they're not
Is it a "good song" - matter of opinion surely ?
On the other hand, Walter was extremely proud of his family's Trade Union parody of G C - 'The Old Man's advice' - for him, it tickes all the boxes, both as a song and as a part of his family history as activists in organising agricultural workers to fight for better conditions

By the way, I've been told by Make Yates that, as far as he knew Walter never sang Yellow Rose of Texas'
Jim