Just an overall bit of advice. Lots of artists have songs are extremely similar if not identical in terms of chord shapes and progressions.
As an example you say you know Sweet Home Chicago. Robert Johnson's Sweet Home Chicago is the same song as Kind Hearted Woman Blues
So even if you know a different version of Sweet Home, you know "that version" of Kind Hearted Woman.
We think of them as guitarists, but they were singers who accompanied themselves on guitar. You can find the same thing with Charlie Patton, and a host of others. Much like them you can build up a HUGE repertoire, by looking for sibling songs, or at the least cousins. You already know how to play them. You just don't realize it. Edited to add 32-20 blues it's really similar to kindhearted woman.