And many guitar duets will work fine with a melodic instrument instead of another guitar - obviously you'd need to check it through for range, and absence of chords in the top part. Some editions advertise themselves as being suitable in this way.
Simon Ambridge Series 40 (2005)
Trevor Semple Series 88 (1992)
Louis Panormo (1838)
Alexander Batov Baroque Guitar (2013)
Simon Ambridge 'Hauser' (2018)