Hi Dann,
eh... I'm not sure if this is useful, but there is a melscript called "Rapid Light Manager" by Ben Rimbey... which selects and shows all your lights in the scene... and it got's a Link/unlink thing... -->
https://www.null3d.net/rlm/
it has a lot of other features aswell... 
regards
Strarup
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Alex V. U. Strarup
One mistake can ruin it all...