The alternate guitar tunings as shown in the table below are collected from multiple sources, bibliographical (books, CD liner notes and other literature), multimedia (audio / video) and from my music teacher Rene Hugo-Sanchez.

South American Guitar Tunings
Name
Country
Region
Type
Pitch Tunings 
Standard *
Re-Entrant
E A D G B E
Galopos Paraguay
Re-Entrant
E A D G# B E
Setime Dulce Peru
Re-Entrant
E A D G B D
Waillija
Peru
Re-Entrant
E A Db G B E
Baulin Peru
Cusco / Ayacucho
Re-Entrant  F F A D G B E

Peru Arequipa

E G C G B E

Peru Sacsamarca, Huancalavica

E A C# F# B Bb

Peru Ayacucho
F# Minor E A C# G B E

Peru  Ayacucho
F# Minor F# A C# F# B E

Ecuador


F# A C# G B E

Peru Ayacucho

F C# F G B E

Peru Ayacucho
G Minor
G Bb D G B E

Peru Ayacucho

G Bb G D C E

Peru Cajamarca

A Major E A C# G C# E

Peru Cajamarca
A Major E A D A C# E

Peru Cajamarca Dropped C7 C G C G B E

Peru Cajamarca Open D Major D A D F# A D
Cow Tuning Peru Huancavalica Open Eb Minor Eb Bb Eb G Bb Eb

Peru Huancavalica
F# Minor F# A E G B E

Peru Iquitos, Cajamarca Dropped D D A D G B E

Peru Iquitos Dropped
D A D G# B E

Peru
Open G Major D G D G B D

Peru Pasco / Huamaco

F Bb D G C E

Peru
Open G6 D G D G B E