Let us not forget John Cousins, who did some excellent recordings ca 1970 of PEI songs (album: 'When Johnny went ploughing for Kieran'), some of them Gorman songs - don't know if he's still on the go. Don't know if Wendall Boyle left anything much behind in the way of recordings, but he must have had Gorman songs in his repertoire.

Ryan's Fancy doing one of Gorman's less-unpleasant songs: https://www.youtube.com/watch?v=9VRzIAT8UHA