Baritone guitars are often tuned A through A or a low B through B, and you may find them with a low G through G (essentially a conventional 4 string tuning with two deeper sound strings positioned above them).
Hooky's Shergold is tuned E through E, as per a normal 6 string lead guitar.
You could take one of those Baritone guitars (the Ernie Ball copies OCR or Crafter ones spring to mind) and string and tune it to E through E, but you would have a hell of a job getting the string tension right without snapping, and it would be a bugger to play. You'd have to use such a gauge of string that you'd shred your fingers, in many cases!