Luke Bryan, Billy Currington, Florida Georgia Line and Lee Brice are fun-lovin party cowboys,
Carrie Underwood, Rascal Flatts and Dixie Chicks are sad-song people
Randy Travis and Josh Turner have a super deep voice, it sounds really good, Randy is based alot on Christianity and such, if thats what you want.
Alan Jackson, Keith Urban, Toby Keith, Kenny Chesney, Lonestar, Tim McGraw and Brad Paisley are a bit of everything, they're really good i think.
Dan Seals is REALLY old/classic. Not truly my fav.
I like a few songs by Deric Ruttan.
Faith Hill has a wonderful voice, you might enjoy a few of her titles.
Lady Antebellum and The Band Perry are overrated, but they have quite a few "good songs" so ill mention them.