Country Blues is a hybrid category that includes elements of R&B, Louisiana swamp boogie, Piedmont, gospel, and country. It is interesting to note that early delta blues players might be classified as country blues by today’s standards. Taj Mahal , Keb'Mo, John Hammond, Jorma Kaukonen are examples
Louisiana Blues is a style that includes many different types of rhythms, including Latin rhumba and the almost country-like zydeco beat. New Orleans was the melting pot of most musical influences in America, so the music of Louisiana combines Cajun, Creole, Zydeco Latin, marches, swing, and others.
Piedmont Blues refers to a guitar fingerpicking style from the foothills of the Carolinas and Georgia. It's characterized by a thumb bass pattern that supports a syncopated melody picked with the fingers. Piedmont Blues musicians include Etta Baker, Blind Boy Fuller, Peg Leg Sam, and Bumble Bee Slim.
Soul blues, or Rhythm and Blues (R&B) is a style of blues develpoed in the late 60s and early 70s. It combines soul music and urban contemporary music. Motown, Stax Records, and Atlantic Records published many songs by artists such as Bobby "Blue" Bland, Ray Charles, Robert Cray, Etta James, Denise LaSalle, Bobby Rush, and Ike Turner.
Texas Blues is a hard-driving swing style blues using repetitive riffs interspersed with lyrics, and having more swing than the Chicago style. Stevie Ray Vaughancontributed by using various types of guitar sounds such as southern slide guitar and different melodies of blues and jazz.