When I see names like Morse, Ralphs, Tipton, Downing, Harper, Stevens, Whitford, Metlocke, Taylor, and Smith mentioned as unsung....I'm no longer sure I know what unsung means. I have read articles in major guitar rags about all of those players multiple times. Some have signature guitars. They may not get press now, but all those guys had a lot of print and visibility in their younger days.
Some here definitely are in that category. Excellent players integral to their bands or genres who were ignored or overshadowed because they played second fiddle to a famous player(s) or were never in a hugely successful bands.