Well, the only thing I have to add to this is that The Doors' didn't have a bass player. Just Robby Krieger on guitar (he played a Gibson SG).
I don't have a complete list of bands without bass players (because my list, even as a one-time oldies DJ is: The Doors), but I'd have to say The Doors are one of my favorite "we don't have a bass player" bands of their era.
As a former drummer I always appreciated good guitars. Gibsons are at the top of my list. Always thought the SG had what I called(for lack of a better word) a ‘’woody’’ sound. Like rich walnut or oak, deep and resonant.